| A.c. Nielsen Company Limited | 71 | 2025-12 |
| A.s. Watson (Health & Beauty UK) Limited | 44 | 2019-06 |
| Abbott Mead Vickers.bbdo Limited | 18 | 2024-12 |
| Abrdn PLC | 7 | 2025-12 |
| Accenture (UK) Limited | 29 | 2026-02 |
| Adam Smith International Ltd | 18 | 2025-12 |
| Adey Holdings (2008) Limited | 51 | 2019-12 |
| Admiral Law Limited | 555 | 2025-12 |
| Aecom Infrastructure & Environment UK Limited | 5 | 2026-04 |
| Aecom Limited | 30 | 2026-04 |
| Agilent Technologies Lda UK Limited | 33 | 2026-04 |
| Airedale Catering Equipment Group Limited | 65 | 2025-06 |
| Akqa Limited | 56 | 2019-12 |
| Akt Ii Limited | 28 | 2025-12 |
| Alcon Eye Care UK Limited | 24 | 2025-12 |
| Aldi Limited | 39 | 2021-12 |
| Alfred H. Knight International Limited | 32 | 2025-12 |
| Allergan Holdings Limited | 43 | 2022-06 |
| Allford Hall Monaghan Morris Limited | 25 | 2026-03 |
| Almac Clinical Services Limited | 34 | 2026-03 |
| Almac Group Limited | 32 | 2026-03 |
| Almac Sciences Limited | 35 | 2026-03 |
| Alpha Financial Markets Consulting UK Limited | 15 | 2025-09 |
| Als Laboratories (UK) Limited | 41 | 2019-09 |
| Altran UK Limited | 30 | 2020-06 |
| Amazon Online UK Limited | 26 | 2025-12 |
| Amcor Europe Group Management | 32 | 2022-06 |
| Amec Foster Wheeler Energy Limited | 40 | 2020-12 |
| Amey Highways Limited | 37 | 2025-12 |
| Amey Ow Limited | 30 | 2025-12 |
| Amey Owr Limited | 26 | 2025-12 |
| Amey UK PLC | 7 | 2024-06 |
| Amgen Limited | 43 | 2025-12 |
| Ams Advanced Marketing Services Investments Limited | 0 | 2025-12 |
| Ams Advanced Marketing Services Limited | 0 | 2025-12 |
| Angel Trains Group Limited | 0 | 2020-12 |
| Antalis Limited | 36 | 2025-12 |
| Ao World PLC | 44 | 2026-03 |
| Aon Consulting Limited | 39 | 2019-12 |
| Aon Hewitt Limited | 40 | 2025-12 |
| Aon Investments Limited | 16 | 2025-12 |
| Apem Limited | 42 | 2025-12 |
| Apx Trading Limited | 80 | 2025-12 |
| Arcadis (UK) Limited | 26 | 2025-12 |
| Arcadis Consulting (UK) Limited | 26 | 2025-12 |
| Arcadis Human Resources Limited | 26 | 2025-12 |
| Arcus Solutions (Holdings) Limited | 54 | 2018-09 |
| Ardent Managed Solutions Holdings Ltd | 28 | 2019-06 |
| Arriva Rail London Limited | 33 | 2026-03 |
| Arriva UK Bus Limited | 51 | 2025-12 |
| Arup Group Limited | 29 | 2026-03 |
| Arup International Projects Limited | 38 | 2026-03 |
| Asahi Europe & International Ltd | 62 | 2025-12 |
| Ascential Events (Europe) Limited | 21 | 2021-06 |
| Ashfield Healthcare Communications Group Limited | 35 | 2025-12 |
| Assystem UK Limited | 19 | 2025-12 |
| Astex Therapeutics Limited | 14 | 2025-12 |
| Astrazeneca UK Limited | 48 | 2025-12 |
| Astus UK Limited | 37 | 2025-12 |
| Atkins Limited | 25 | 2025-12 |
| Augean PLC | 50 | 2025-12 |
| Ausurus Group Ltd | 5 | 2019-06 |
| Auto-sleepers Holdings Limited | 33 | 2019-08 |
| Auto-sleepers Investments Limited | 33 | 2019-08 |
| Avant Homes Group Limited | 55 | 2024-06 |
| Aviva PLC | 14 | 2025-12 |
| Avl United Kingdom Limited | 54 | 2025-12 |
| Avm Impact Ltd | 46 | 2025-12 |
| Azlan Logistics Limited | 48 | 2026-05 |
| B.a.t Services Limited | 22 | 2025-12 |
| Babcock Marine (Clyde) Limited | 24 | 2023-03 |
| Bancon Developments Holdings Limited | 44 | 2026-03 |
| Banham Patent Locks Limited | 33 | 2025-12 |
| Banhams Patent Locks Holdings Limited | 37 | 2019-06 |
| Barchester Healthcare Limited | 38 | 2025-12 |
| Basell UK Holdings Limited | 15 | 2023-12 |
| Batlaw Limited | 40 | 2025-12 |
| Battersea Dogs' and Cats' Home | 24 | 2019-06 |
| Bauer Consumer Media Limited | 17 | 2019-12 |
| Bauer Radio Limited | 9 | 2025-12 |
| Be Modern Holdings Limited | 33 | 2025-10 |
| Beatson Institute for Cancer Research | 30 | 2026-03 |
| Belron Finance Limited | 30 | 2025-12 |
| Belron International Limited | 47 | 2025-12 |
| Bestway Panacea Holdings Limited | 39 | 2022-06 |
| Bet365 Group Limited | 18 | 2026-03 |
| Bhp Billiton International Services Limited | 44 | 2018-12 |
| Blackwell UK Limited | 42 | 2020-06 |
| Blick Rothenberg Limited | 31 | 2025-12 |
| Bmg Rights Management (UK) Limited | 33 | 2025-12 |
| Bmt Defence and Security UK Limited | 24 | 2026-03 |
| Bmt Group Limited | 24 | 2026-03 |
| Boston Consulting Group Limited (The) | 25 | 2025-12 |
| Bp P.l.c. | 19 | 2025-12 |
| Brand-rex Holdings Limited | 56 | 2025-12 |
| Bray Leino Limited | 39 | 2020-06 |
| Breedon Northern Limited | 52 | 2021-06 |
| British American Tobacco (Brands) Limited | 25 | 2018-12 |
| British American Tobacco (Investments) Limited | 42 | 2025-12 |
| British American Tobacco Taiwan Logistics Limited | 23 | 2023-12 |
| British Engineering Services Limited | 39 | 2025-12 |
| British Medical Association | 20 | 2025-12 |
| British-american Tobacco (Holdings) Limited | 33 | 2025-12 |
| Brookson Limited | 26 | 2022-09 |
| Brookson Solutions Limited | 17 | 2022-09 |
| Btg International Limited | 26 | 2024-12 |
| Building Design Partnership Limited | 27 | 2026-03 |
| Bureau Veritas Building Control UK Limited | 30 | 2025-12 |
| Bureau Veritas Commodities UK Limited | 40 | 2025-12 |
| Bureau Veritas UK Limited | 37 | 2025-12 |
| Burhill Group Limited | 21 | 2025-12 |
| Buro Happold Engineers Limited | 23 | 2026-04 |
| Buro Happold Limited | 35 | 2026-04 |
| Cadence Design Systems Limited | 37 | 2019-12 |
| Cadence Innova Ltd | 15 | 2024-09 |
| Cambian Group PLC | 28 | 2018-12 |
| Cambridge Consultants Limited | 21 | 2025-12 |
| Campbell Lutyens Holdings Limited | 25 | 2017-10 |
| Cancer Research Technology Limited | 38 | 2026-03 |
| Capita Property and Infrastructure Limited | 17 | 2025-12 |
| Capital Professional Limited | 24 | 2025-12 |
| Caretech Holdings PLC | 25 | 2019-03 |
| Carl Zeiss Ltd | 23 | 2025-09 |
| Caroola Group Ltd | 22 | 2026-04 |
| Carpenters Limited | 19 | 2025-06 |
| Carr's Group PLC | 31 | 2026-02 |
| Castrol Limited | 30 | 2025-12 |
| Catalyst Healthcare (Manchester) Limited | 27 | 2026-03 |
| Ccep Group Services Limited | 90 | 2025-12 |
| Cd&r Firefly Bidco Limited | 31 | 2018-06 |
| Cell Therapy Catapult Limited | 15 | 2026-03 |
| Celltech R&d Limited | 41 | 2026-01 |
| Centaur Services Limited | 47 | 2023-09 |
| Centre for Process Innovation Limited | 22 | 2024-09 |
| Centrica Services Limited | 52 | 2025-12 |
| Ceres Power Limited | 23 | 2025-12 |
| Cgg Services (UK) Limited | 24 | 2025-12 |
| Ch & Co Catering Group Limited | 64 | 2023-12 |
| Ch Acquisition Limited | 54 | 2021-01 |
| Ch2m Hill International Nuclear Services Ltd | 26 | 2025-06 |
| Ch2m Hill United Kingdom | 19 | 2025-12 |
| Ch4 Gas Utility and Maintenance Services Limited | 26 | 2025-12 |
| Charles River Discovery Research Services UK Limited | 41 | 2025-12 |
| Charles River Laboratories Edinburgh Limited | 49 | 2025-12 |
| Chasedesign Worldwide Limited | 15 | 2025-06 |
| Chelsea Fc PLC | 23 | 2025-12 |
| Chiltern International Limited | 39 | 2018-12 |
| Cinch Fleetco Limited | 1 | 2024-03 |
| Citation Limited | 13 | 2025-12 |
| Cleansing Service Group Limited | 35 | 2025-12 |
| Clear Channel International Limited | 20 | 2024-12 |
| Clear Channel UK Limited | 28 | 2025-12 |
| Clifford Chance Cis Limited | 0 | 2022-10 |
| Clinigen Group PLC | 48 | 2025-12 |
| Clinimed (Holdings) Limited | 32 | 2025-12 |
| Clipper Contracting Group Ltd | 7 | 2019-06 |
| Clipper Logistics PLC | 59 | 2022-04 |
| Close Asset Management Holdings Limited | 35 | 2026-03 |
| Cls Holdings PLC | 22 | 2025-12 |
| Cmgrp Holdings Limited | 16 | 2025-12 |
| Cmgrp UK Limited | 6 | 2025-12 |
| Cng Fuels Ltd | 19 | 2026-03 |
| Co-operative Legal Services Limited | 38 | 2025-07 |
| Coca-cola European Partners Services Europe Limited | 78 | 2025-12 |
| Comau U.k. Limited | 85 | 2025-12 |
| Communisis PLC | 73 | 2018-06 |
| Connected Places Catapult | 21 | 2026-03 |
| Connells Survey & Valuation Limited | 8 | 2025-12 |
| Constantine Group Limited | 22 | 2019-06 |
| Consumers' Association | 24 | 2025-12 |
| Cooper Parry Advisory Limited | 22 | 2026-04 |
| Corning Limited | 76 | 2025-12 |
| Covance Clinical and Periapproval Services Limited | 48 | 2025-12 |
| Covance Clinical Research Unit Limited | 55 | 2025-12 |
| Covance Laboratories Limited | 27 | 2025-12 |
| Cra International (UK) Limited | 23 | 2025-12 |
| Creation Communications Limited | 60 | 2025-12 |
| Creative Lynx Limited | 28 | 2025-12 |
| Crest Nicholson PLC | 39 | 2026-04 |
| Crest Plus Operations Limited | 7 | 2026-03 |
| Croner Group Limited | 12 | 2026-03 |
| Crown Agents Limited | 35 | 2023-06 |
| Crown Street (Manchester) Limited | 19 | 2023-05 |
| Csib (No.1) Limited | 60 | 2025-12 |
| Currie & Brown UK Limited | 21 | 2025-12 |
| Cvs (UK) Limited | 27 | 2025-12 |
| Cvs Group PLC | 35 | 2021-12 |
| Cwbc Properties (Bp1) Limited | 1 | 2021-06 |
| D & B Europe Limited | 3 | 2025-12 |
| Dac Beachcroft Claims Limited | 41 | 2026-04 |
| Dai Europe Ltd | 32 | 2024-12 |
| Daniel J. Edelman Limited | 39 | 2025-12 |
| Dart Group PLC | 29 | 2026-03 |
| Ddb UK Limited | 28 | 2025-06 |
| De Beers Jewellers Limited | 47 | 2025-12 |
| Deepmind Technologies Limited | 45 | 2025-12 |
| Deloitte Erdc Limited | 5 | 2025-12 |
| Deloitte Mcs Limited | 22 | 2026-05 |
| Dentons Europe LLP | 49 | 2025-12 |
| Dentsu Aegis London Limited | 60 | 2021-06 |
| Derek Raphael (Holdings) Limited | 5 | 2023-12 |
| Devro PLC | 27 | 2025-12 |
| Dialog Semiconductor (UK) Limited | 30 | 2025-12 |
| Dialog Semiconductor Operations Services Limited | 22 | 2025-12 |
| Dialog Semiconductor PLC | 28 | 2025-12 |
| Diamond Light Source Limited | 27 | 2026-03 |
| Diamond Resorts (Group Holdings) Limited | 33 | 2025-12 |
| Diamond Resorts (Holdings) Limited | 33 | 2025-12 |
| Digitaslbi Limited | 66 | 2025-12 |
| Displaylink (UK) Limited | 29 | 2025-12 |
| Dormole Limited | 43 | 2019-06 |
| Draper Tool Group Limited(the) | 27 | 2018-02 |
| Ds Smith PLC | 75 | 2025-12 |
| Dunnhumby Limited | 37 | 2026-03 |
| E D & F Man Limited | 24 | 2025-12 |
| E.on Control Solutions Limited | 55 | 2026-06 |
| Eastleigh Care Group Limited | 7 | 2019-12 |
| Ebiquity Associates Limited | 21 | 2020-12 |
| Ecotricity Group Ltd | 43 | 2019-04 |
| Edf Energy Renewables Holdings Limited | 57 | 2025-12 |
| Elbit Systems UK Limited | 36 | 2025-12 |
| Element Six (UK) Limited. | 48 | 2024-12 |
| Energy, Safety and Risk Consultants (UK) Limited | 27 | 2025-03 |
| Engels (No.1) Limited | 58 | 2025-12 |
| Engine Acquisition Limited | 35 | 2020-12 |
| Enovert Management Limited | 56 | 2022-12 |
| Entertainment One UK Holdings Limited | 21 | 2023-06 |
| Ergea UK and Ireland Limited | 32 | 2025-12 |
| Erm-europe,ltd | 20 | 2021-03 |
| Ernst & Young (Asia-pacific) Services Limited | 295 | 2025-12 |
| Ernst & Young (Emeia) Services Limited | 121 | 2025-12 |
| Essence Global Limited | 101 | 2025-06 |
| Essentra International Limited | 61 | 2025-12 |
| Essity Operations Manchester Limited | 28 | 2024-12 |
| Eurofins Forensic Services Limited | 41 | 2024-12 |
| Euromoney Trading Limited | 40 | 2026-03 |
| European Tyre Enterprise Limited | 63 | 2026-03 |
| Evotec (UK) Limited | 32 | 2025-12 |
| Exchange House Services Limited | 21 | 2026-04 |
| Exova (UK) Limited | 49 | 2018-06 |
| Expanded Limited | 27 | 2026-03 |
| Exterion Media (UK) Limited | 22 | 2026-03 |
| Ey Global Services Limited | 98 | 2025-12 |
| Faithful+gould Limited | 25 | 2025-12 |
| Farol Holdings Limited | 47 | 2021-07 |
| Fbc (Futurebrand) Limited | 6 | 2025-12 |
| Fcb Europe Limited | 19 | 2025-06 |
| Fcb Health Hampshire Limited | 6 | 2025-12 |
| Fcb Inferno Limited | 8 | 2025-12 |
| Fera Science Limited | 22 | 2023-12 |
| Fern Trading Limited | 25 | 2025-12 |
| Fern Trading Limited | 7 | 2025-12 |
| First Rail Holdings Limited | 34 | 2026-03 |
| Firstgroup Holdings Limited | 42 | 2018-09 |
| Firstport Limited | 76 | 2023-06 |
| Flightcare Multiservices UK Limited | 36 | 2018-12 |
| Fluor Limited | 33 | 2026-01 |
| Footballco Media Limited | 16 | 2025-12 |
| Ford Technologies Limited | 61 | 2025-12 |
| Formula One Marketing Limited | 12 | 2025-12 |
| Foster + Partners Limited | 26 | 2026-04 |
| Fox Ipl Limited | 19 | 2025-12 |
| Frazer-nash Consultancy Limited | 21 | 2026-03 |
| Fremantlemedia Group Limited | 21 | 2025-12 |
| Frp Advisory Trading Limited | 19 | 2024-04 |
| Fugro Gb (North) Marine Limited | 41 | 2018-06 |
| Fugro Gb Marine Limited | 45 | 2018-06 |
| Fugro Geoservices Limited | 38 | 2019-06 |
| G L Hearn Limited | 12 | 2022-06 |
| G4s Corporate Services Limited | 23 | 2024-12 |
| G4s Health Services (UK) Limited | 28 | 2025-12 |
| G4s Regional Management (UK & I) Limited | 28 | 2025-12 |
| Gap (UK Holdings) Limited | 4 | 2025-02 |
| Gardline Limited | 44 | 2019-06 |
| Gardrum Holdings Limited | 30 | 2019-06 |
| Gateley PLC | 27 | 2026-04 |
| Ge Energy Power Conversion Technology Limited | 0 | 2019-12 |
| Genesis Oil & Gas Consultants Limited | 13 | 2025-12 |
| Genome Research Limited | 20 | 2026-03 |
| Genus Breeding Limited | 28 | 2025-12 |
| Genzyme Therapeutics Limited | 98 | 2020-12 |
| Gfk U.k. Limited | 84 | 2025-12 |
| Gkn Automotive Limited | 57 | 2025-12 |
| Glaxosmithkline Research & Development Limited | 60 | 2025-12 |
| Glaxosmithkline Services Unlimited | 54 | 2025-12 |
| Global Media & Entertainment Limited | 22 | 2026-03 |
| Globaldata UK Ltd | 31 | 2025-12 |
| Golin/harris International Limited | 11 | 2025-12 |
| Goodwin PLC | 30 | 2025-04 |
| Grafton Group (UK) Public Limited Company | 26 | 2025-12 |
| Grainger PLC | 20 | 2026-03 |
| Grant Thornton Agile Talent Solutions Limited | 14 | 2025-12 |
| Grant Thornton Business Services | 27 | 2023-12 |
| Grey Advertising Limited | 28 | 2024-12 |
| Grey Technology Limited | 38 | 2022-05 |
| Grosvenor Estate Management Limited | 11 | 2025-07 |
| Gutteridge Haskins & Davey Limited | 27 | 2025-12 |
| Gw Research Limited | 27 | 2021-06 |
| H H Associates Limited | 35 | 2026-03 |
| H.tempest Limited | 12 | 2023-12 |
| Halcrow Group Limited | 24 | 2022-07 |
| Halfords Group PLC | 73 | 2024-03 |
| Halsion Holdings Limited | 5 | 2022-03 |
| Hammerson Group Management Limited | 13 | 2025-12 |
| Hartwell PLC | 25 | 2021-11 |
| Haskoningdhv UK Limited | 25 | 2025-12 |
| Havas Media Limited | 47 | 2025-12 |
| Havas Worldwide London Limited | 44 | 2024-12 |
| Hdr Consulting Limited | 30 | 2025-12 |
| Headlam Group PLC | 48 | 2023-12 |
| Hearts & Science Limited | 50 | 2025-12 |
| Helston Garages Group (Management) Limited | 16 | 2023-02 |
| Henderson Administration Limited | 16 | 2025-12 |
| Henkel Limited | 50 | 2024-06 |
| Hexadex Limited | 15 | 2025-12 |
| Hf Group Limited | 44 | 2026-03 |
| Hgf Limited | 71 | 2019-04 |
| Higgins Group PLC | 11 | 2023-07 |
| Highgrove Group PLC | 32 | 2026-03 |
| Hill & Smith Holdings PLC | 23 | 2025-12 |
| Hillside (New Media Holdings) Limited | 8 | 2026-03 |
| Hilton Worldwide Limited | 34 | 2025-12 |
| Hogarth Worldwide Limited | 16 | 2025-12 |
| Hogg Robinson Limited | 5 | 2025-06 |
| Hollis Global Limited | 37 | 2026-04 |
| Hologic Hub Ltd | 24 | 2022-03 |
| Hologic Ip Ltd | 20 | 2021-09 |
| Honda R & D Europe (U.k.) Limited | 19 | 2025-03 |
| Horiba Mira Limited | 32 | 2022-06 |
| Hsb Engineering Insurance Services Limited | 32 | 2025-12 |
| Hsbc Global Services Limited | 10 | 2025-12 |
| Hsbc Holdings PLC | 16 | 2025-12 |
| Huge UK Limited | 13 | 2025-06 |
| Hugo & Cat Ltd | 9 | 2024-12 |
| Hustle Digital Ltd | 85 | 2025-12 |
| I.m. Properties PLC | 16 | 2025-12 |
| Icap Management Services Limited | 26 | 2020-12 |
| Icc Health Limited | 10 | 2025-12 |
| Icon Clinical Research (U.k.) Limited | 22 | 2025-06 |
| Illumina Cambridge Limited | 35 | 2025-12 |
| Imi Kynoch Limited | 25 | 2025-12 |
| Immunocore Limited | 41 | 2021-07 |
| Inchcape Management (Services) Limited | 42 | 2021-06 |
| Independent Talent Brands Limited | 6 | 2025-12 |
| Independent Vetcare Limited | 58 | 2023-09 |
| Inenco Group Limited | 45 | 2018-10 |
| Ineos Derivatives France Limited | 41 | 2022-06 |
| Inferno Limited | 1 | 2019-12 |
| Informa Group Limited | 30 | 2025-12 |
| Informa Telecoms & Media Limited | 30 | 2025-12 |
| Inhealth Group Holdings PLC | 52 | 2026-03 |
| Inhealth Group Limited | 52 | 2026-03 |
| Inhealth UK Holdings Limited | 52 | 2026-03 |
| Innogy Business Services UK Limited | 39 | 2021-12 |
| Innovative Technology Limited | 33 | 2020-06 |
| Insight Investment Services Limited | 13 | 2024-12 |
| Insights Learning & Development Limited | 29 | 2020-09 |
| Intel Corporation (UK) Limited | 17 | 2025-12 |
| International Motors Limited | 39 | 2025-12 |
| International Rescue Committee, U.k. | 31 | 2026-03 |
| Interpath Ltd | 29 | 2025-03 |
| Interpublic Limited | 7 | 2025-12 |
| Interservefm Ltd | 107 | 2021-09 |
| Intervet UK Limited | 40 | 2025-12 |
| Ipg Health Medical Communications Limited | 6 | 2025-12 |
| Ipg Holdings (UK) Limited | 12 | 2025-12 |
| Ipg Studios UK Limited | 40 | 2025-12 |
| Ipreo Limited | 29 | 2025-12 |
| Ipsos Mori UK Limited | 27 | 2025-12 |
| Iqvia Biotech Ltd. | 54 | 2025-12 |
| Iqvia Ies UK Limited | 65 | 2025-12 |
| Iqvia Solutions UK Limited | 16 | 2020-06 |
| Isg Central Services Limited | 35 | 2024-06 |
| Its Testing Services (UK) Limited | 49 | 2025-12 |
| Itv Consumer Limited | 32 | 2025-12 |
| Itv Rights Limited | 23 | 2025-12 |
| Ivcc | 37 | 2026-01 |
| J. & P. Coats, Limited | 35 | 2025-12 |
| J. Marr Limited | 38 | 2019-06 |
| J. Walter Thompson Group Limited | 46 | 2019-06 |
| Jack Morton Worldwide Limited | 7 | 2025-12 |
| Jacobs U.k. Limited | 17 | 2026-03 |
| James Hay Partnership Management Limited | 20 | 2025-12 |
| Jardine Motors Group UK Limited | 26 | 2023-12 |
| Jato Dynamics Limited | 34 | 2025-12 |
| Jcdecaux UK Limited | 30 | 2025-12 |
| Jdr Cable Systems Limited | 50 | 2025-12 |
| Jeremy Benn Associates Limited | 19 | 2026-04 |
| Jlt Management Services Limited | 11 | 2019-06 |
| Jockey Club Racecourses (Holdings) Limited | 33 | 2025-12 |
| John Innes Centre | 27 | 2026-03 |
| John Laing Group PLC | 32 | 2020-12 |
| John Laing Holdco Limited | 86 | 2020-12 |
| John Laing Investments Limited | 47 | 2020-12 |
| John Laing Limited | 86 | 2020-12 |
| Johnson & Johnson Consumer Services Eame Ltd | 54 | 2025-12 |
| Kantar Media UK Ltd | 41 | 2023-06 |
| Kantar Public UK Limited | 41 | 2023-12 |
| Kbc Process Technology Limited | 26 | 2026-03 |
| Kellogg Brown & Root Limited | 15 | 2025-12 |
| Kier Business Services Limited | 23 | 2021-12 |
| Kier Limited | 32 | 2025-12 |
| Kier Services Limited | 37 | 2025-12 |
| Kinesso Limited | 77 | 2025-12 |
| Kinetic Worldwide Limited | 67 | 2025-12 |
| Kingfisher PLC | 30 | 2026-01 |
| Kistos Energy Limited | 17 | 2025-12 |
| Kistos PLC | 28 | 2025-12 |
| Knight Frank Services Company | 0 | 2025-03 |
| Knights Professional Services Limited | 18 | 2026-04 |
| Korn Ferry (UK) Limited | 32 | 2022-10 |
| Korn/ferry International Limited | 22 | 2019-10 |
| Kpmg United Kingdom PLC | 22 | 2026-03 |
| Kr Media UK Limited | 601 | 2023-12 |
| Kso Solutions Limited | 75 | 2025-12 |
| Kuwait Petroleum International Limited | 17 | 2026-03 |
| Kyowa Kirin Services Ltd | 53 | 2025-06 |
| Lambert Smith Hampton Limited | 46 | 2022-12 |
| Legal & General Resources Limited | 30 | 2022-06 |
| Leica Biosystems Newcastle Limited | 44 | 2025-12 |
| Lendlease Residential (Cg) Limited | 22 | 2025-12 |
| Leyland Sdm Limited | 60 | 2021-06 |
| Lgc Genomics Limited | 47 | 2026-03 |
| Lgc Limited | 49 | 2026-03 |
| Liberata UK Limited | 32 | 2025-12 |
| Liberty Blume Business Solutions Limited | 45 | 2025-12 |
| Liberty Global Technology Limited | 21 | 2025-12 |
| Liberty Retail Limited | 45 | 2026-01 |
| Liberty Specialty Markets Limited | 19 | 2025-12 |
| Lifearc | 27 | 2025-12 |
| Lightspeed Research Ltd. | 40 | 2023-06 |
| Linnaeus Veterinary Limited | 43 | 2024-12 |
| Lion Re:sources UK Limited | 37 | 2025-12 |
| Liverpool School of Tropical Medicine | 37 | 2026-01 |
| Lkab Minerals Limited | 20 | 2019-12 |
| Lockheed Martin UK Limited | 28 | 2025-12 |
| London Clubs Management Limited | 44 | 2022-06 |
| London Stock Exchange Group Holdings Limited | 23 | 2025-12 |
| Lorena Investments Limited | 1 | 2020-06 |
| Lowe International Limited | 14 | 2025-12 |
| Lowri Beck Services Limited | 28 | 2025-12 |
| Luxfer Holdings PLC | 100 | 2022-12 |
| Lyons Davidson Limited | 35 | 2026-05 |
| M & G Limited | 62 | 2025-12 |
| Mace Consult Limited | 16 | 2025-12 |
| Macquarie Investments 1 Limited | 19 | 2026-03 |
| Macquarie UK Holdings Limited | 3 | 2026-03 |
| Mahle Powertrain Limited | 57 | 2019-06 |
| Mamas & Papas (Holdings) Limited | 75 | 2026-03 |
| Maritime Assurance & Consulting Limited | 32 | 2025-12 |
| Market & Opinion Research International Limited | 29 | 2025-12 |
| Marshalls Group Limited | 46 | 2025-12 |
| Marshalls PLC | 46 | 2025-12 |
| Marston's Pubs Parent Limited | 33 | 2024-09 |
| Marston's Trading Limited | 33 | 2024-09 |
| Masco Corporation Limited | 19 | 2025-12 |
| Max Spielmann Limited | 27 | 2026-03 |
| Maxus Communications (UK) Limited | 51 | 2018-12 |
| Mbh Group (UK) Limited | 48 | 2021-01 |
| Mccann-erickson Advertising Limited | 19 | 2025-12 |
| Mccann-erickson Emea Limited | 10 | 2025-12 |
| Mccann-erickson Healthcare UK Limited | 7 | 2025-12 |
| Mccann-erickson UK Group Limited | 14 | 2025-12 |
| Mediabrands Emea Limited | 36 | 2025-12 |
| Mediabrands International Limited | 88 | 2025-12 |
| Mediabrands Limited | 61 | 2025-12 |
| Mediacom North Limited | 71 | 2024-06 |
| Mediacom Scotland Limited | 67 | 2024-06 |
| Mediacom UK Limited | 87 | 2024-06 |
| Medicines Discovery Catapult Limited | 17 | 2023-09 |
| Medicines Discovery Catapult Services Commercial Limited | 4 | 2023-09 |
| Medimmune Limited | 54 | 2025-12 |
| Medivet Group Limited | 19 | 2019-10 |
| Meggitt PLC | 132 | 2020-12 |
| Mercedes Amg High Performance Powertrains Limited | 28 | 2025-12 |
| Merck Sharp & Dohme (UK) Limited | 36 | 2025-12 |
| Merian Investment Management Limited | 21 | 2021-06 |
| Merlin Attractions Operations Limited | 33 | 2025-12 |
| Meta Management Services Limited | 21 | 2024-03 |
| Mgl2 Limited | 38 | 2025-12 |
| Mhc UK Limited | 24 | 2025-12 |
| Mil Overseas Limited | 31 | 2019-06 |
| Millbrook Proving Ground Limited | 58 | 2025-06 |
| Mindshare Media UK Limited | 50 | 2025-12 |
| Minster Law Limited | 28 | 2025-12 |
| Mitie Group PLC | 34 | 2020-03 |
| Mjt Securities Limited | 38 | 2023-06 |
| Mobile Phones Direct Limited | 84 | 2022-03 |
| Moderna Biotech Distributor UK Ltd | 31 | 2025-12 |
| Moderna Biotech UK Limited | 50 | 2025-12 |
| Momentum Activating Demand Limited | 44 | 2025-12 |
| Mondelez UK R&d Limited | 96 | 2024-06 |
| Mondrian Investment Partners Limited | 16 | 2025-12 |
| Morleys Stores Limited | 24 | 2025-07 |
| Morris Group Limited | 40 | 2026-04 |
| Morrison Data Services Limited | 19 | 2026-03 |
| Mortgage Advice Bureau (Holdings) PLC | 20 | 2024-12 |
| Mott Macdonald Limited | 17 | 2025-12 |
| Mountfitchet Group Limited | 11 | 2019-07 |
| Mrm Worldwide (UK) Limited | 6 | 2025-12 |
| Ms Amlin Corporate Services Limited | 28 | 2025-12 |
| Ms International PLC | 38 | 2026-04 |
| Msix Communications Limited | 146 | 2024-12 |
| Mtc Operations Limited | 42 | 2026-03 |
| Mullenlowe London Limited | 59 | 2025-12 |
| Mundipharma International Limited | 69 | 2024-12 |
| Mundipharma Research Limited | 52 | 2024-12 |
| Munich Re UK Services Limited | 16 | 2025-12 |
| Murgitroyd & Company Limited | 40 | 2026-05 |
| Mustang Engineering Limited | 25 | 2020-12 |
| My Home Move Ltd | 2 | 2019-06 |
| Myriad Healthcare Holdings Limited | 42 | 2020-09 |
| National Exhibition Centre Limited (The) | 42 | 2026-03 |
| National Grid Commercial Holdings Limited | 21 | 2026-03 |
| National Nuclear Laboratory Limited | 12 | 2026-03 |
| National Oceanography Centre | 23 | 2026-03 |
| Nbc Universal Global Networks Management Limited | 71 | 2025-12 |
| Nbcuniversal International Limited | 37 | 2025-12 |
| Nbcuniversal International Networks Holdings Limited | 2 | 2021-12 |
| Ncc Group PLC | 49 | 2018-11 |
| Ncr Financial Solutions Group Limited | 60 | 2021-12 |
| Nectar Loyalty Limited | 38 | 2026-02 |
| Nesta | 32 | 2026-03 |
| Newlaw Legal Limited | 23 | 2026-04 |
| Newton Europe Limited | 21 | 2026-02 |
| Next Holdings Limited | 21 | 2026-01 |
| Nicholas Associates Group Limited | 29 | 2024-12 |
| Nicholls & Clarke Limited | 40 | 2026-06 |
| Niras Group (UK) Ltd | 28 | 2025-12 |
| Norcros Group (Holdings) Limited | 42 | 2026-03 |
| North Highland UK Limited | 10 | 2025-12 |
| Northern Foods Limited | 34 | 2025-07 |
| Npower Northern Limited | 21 | 2021-12 |
| Nsk Europe Limited | 40 | 2026-03 |
| Numis Corporation PLC | 38 | 2019-09 |
| Oasis Healthcare Limited | 13 | 2025-12 |
| Ocado Central Services Limited | 25 | 2025-11 |
| Ocean Automotive (Holdings) Limited | 21 | 2025-12 |
| Octagon Worldwide Limited | 9 | 2025-12 |
| Ogilvy & Mather Group (Holdings) Limited | 30 | 2024-06 |
| Ogury Limited | 57 | 2025-12 |
| Oh Assist Limited | 34 | 2024-12 |
| Ohob Holdings Limited | 23 | 2026-03 |
| Oil Spill Response (Capping) Limited | 37 | 2025-12 |
| Omnicom Media Group UK Limited | 56 | 2025-12 |
| Onesubsea Ip UK Limited | 12 | 2025-12 |
| Optum Health Solutions (UK) Limited | 14 | 2025-12 |
| Orchid Cellmark Ltd | 36 | 2019-06 |
| Ordnance Survey Limited | 32 | 2026-03 |
| Orion Trading Emea Limited | 62 | 2025-12 |
| Ove Arup & Partners International Limited | 31 | 2026-03 |
| Ove Arup & Partners Limited | 33 | 2026-03 |
| Overseas Supply Services Limited | 54 | 2022-06 |
| Oxford Biomedica (UK) Limited | 21 | 2025-12 |
| Oxford Biomedica PLC | 15 | 2025-12 |
| Oxford Nanopore Technologies PLC | 39 | 2025-12 |
| Oxford Policy Management Limited | 33 | 2025-09 |
| Pa Consulting Services Limited | 25 | 2025-12 |
| Pa Holdings Limited | 17 | 2025-12 |
| Parasol Limited | 14 | 2026-04 |
| Parkdean Resorts UK Limited | 49 | 2025-12 |
| Pe Limited | 17 | 2026-03 |
| Pendragon PLC | 33 | 2023-12 |
| Peninsula Business Services Limited | 23 | 2026-03 |
| Pentland Group (Trading) Limited | 36 | 2026-01 |
| Pentland Group PLC | 74 | 2024-06 |
| Petroleum Experts Limited | 17 | 2025-09 |
| Peugeot Citroen Automobiles UK Limited | 198 | 2025-12 |
| Pfizer R&d UK Limited | 59 | 2026-05 |
| Pfpl (Holdings) Ltd. | 14 | 2026-03 |
| Pg Media Services Limited | 49 | 2025-12 |
| Pharmaron UK Limited | 28 | 2025-12 |
| Phd Media Limited | 60 | 2025-12 |
| Pizzaexpress Group Limited | 28 | 2020-12 |
| Power Electrics (Bristol) Limited | 52 | 2026-03 |
| Ppd Global Ltd | 49 | 2025-12 |
| Premier Oil PLC | 29 | 2021-06 |
| Primetals Technologies, Limited | 51 | 2026-03 |
| Procter & Gamble Technical Centres Limited | 60 | 2025-12 |
| Prodigious UK Limited | 46 | 2025-06 |
| Publicis Healthcare Communications Group Limited | 37 | 2025-12 |
| Publicis Limited | 44 | 2025-12 |
| Publicis Media Exchange Limited | 38 | 2022-12 |
| Pz Cussons (International) Limited | 71 | 2026-05 |
| Q Squared Solutions Limited | 44 | 2025-12 |
| Qbe Management Services (UK) Limited | 22 | 2025-12 |
| Qiagen Manchester Limited | 32 | 2026-06 |
| Qinetiq Limited | 28 | 2026-03 |
| Quotient Sciences Limited | 36 | 2025-12 |
| R/ga Media Group Limited | 24 | 2025-12 |
| Radley Retail Limited | 40 | 2022-10 |
| Ramboll UK Limited | 28 | 2025-12 |
| Rank Group Gaming Division Limited | 251 | 2025-12 |
| Rank Leisure Holdings Limited | 29 | 2025-12 |
| Rapport Outdoor Limited | 8 | 2025-12 |
| Raspberry Pi Ltd | 55 | 2024-06 |
| Reach Regionals Limited | 29 | 2025-12 |
| Reading Scientific Services Limited | 69 | 2025-06 |
| Reckitt Benckiser (Brands) Limited | 52 | 2025-12 |
| Reckitt Benckiser (Rumea) Limited | 55 | 2019-06 |
| Reckitt Benckiser Corporate Services Limited | 67 | 2025-12 |
| Reckitt Benckiser Health Limited | 59 | 2025-12 |
| Redcentric PLC | 47 | 2019-09 |
| Redde PLC | 31 | 2026-04 |
| Relx (UK) Limited | 29 | 2025-12 |
| Rhombi Holdings Limited | 47 | 2019-12 |
| Richmond Care Villages Holdings Limited | 37 | 2019-12 |
| Ricoh Europe PLC | 28 | 2026-03 |
| Rider Levett Bucknall UK Limited | 41 | 2026-04 |
| Rio Tinto Iron Ore Atlantic Limited | 32 | 2025-12 |
| Rio Tinto London Limited | 30 | 2025-12 |
| Rm Property and Facilities Solutions Limited | 45 | 2026-03 |
| Roadchef Development Holdings Limited | 28 | 2025-12 |
| Roadchef Limited | 32 | 2025-12 |
| Robert Bosch UK Holdings Limited | 27 | 2018-12 |
| Roche Diagnostics Limited | 28 | 2025-12 |
| Rolls-royce International Limited | 61 | 2018-06 |
| Rowan Drilling (UK) Limited | 79 | 2023-12 |
| Rps Consulting Services Limited | 20 | 2026-03 |
| Rps Environmental Management Limited | 20 | 2026-03 |
| Rwe Renewables UK Wind Services Limited | 16 | 2025-12 |
| Saatchi & Saatchi Group Ltd | 36 | 2025-12 |
| Sabre Global Technologies Limited | 33 | 2018-12 |
| Saga Group Limited | 30 | 2026-01 |
| Saint-gobain High Performance Solutions UK Limited | 32 | 2024-12 |
| Saint-gobain Limited | 67 | 2025-12 |
| Salmon Limited | 32 | 2019-06 |
| Saria Limited | 53 | 2021-12 |
| Schlumberger Oilfield UK PLC | 49 | 2025-12 |
| Schroder Corporate Services Limited | 24 | 2025-12 |
| Scotia Gas Networks Limited | 14 | 2026-03 |
| Scotiabank Europe PLC | 41 | 2023-04 |
| Scoto Limited | 53 | 2020-04 |
| Scottish Power UK PLC | 34 | 2025-12 |
| Scottish Widows Schroder Personal Wealth Limited | 22 | 2025-12 |
| Seamap Limited | 28 | 2026-04 |
| Sepura Limited | 38 | 2025-12 |
| Seqirus UK Limited | 51 | 2025-12 |
| Serco Limited | 19 | 2025-12 |
| Sfs Group Fastening Technology Limited | 32 | 2025-12 |
| Sinclair Knight Merz (Europe) Limited | 52 | 2019-03 |
| Slalom Consulting Limited | 32 | 2025-12 |
| Slater & Gordon (UK) 1 Limited | 34 | 2025-06 |
| Slater Gordon Solutions Legal Limited | 36 | 2025-12 |
| Slr Consulting Limited | 40 | 2025-07 |
| Smith & Nephew UK Limited | 45 | 2025-12 |
| Sms Energy Services Limited | 26 | 2024-12 |
| Snc-lavalin Rail & Transit Limited | 25 | 2025-12 |
| Snows Business Holdings Limited | 21 | 2024-12 |
| Socotec UK Limited | 56 | 2025-12 |
| Sodexo Global Services UK Limited | 24 | 2025-02 |
| Sodexo Limited | 38 | 2026-02 |
| Sonic Healthcare Holding Company | 5 | 2023-06 |
| South Downs Capital Limited | 16 | 2022-03 |
| Spark Foundry Limited | 59 | 2025-12 |
| Spark44 Limited | 13 | 2021-03 |
| Specialist People Services Group Limited | 34 | 2022-03 |
| Spectris PLC | 42 | 2025-12 |
| Spirax-sarco Overseas Limited | 17 | 2025-06 |
| Sports Direct International PLC | 39 | 2019-10 |
| Ssp Financing UK Limited | 38 | 2023-03 |
| St. James's Place PLC | 28 | 2021-12 |
| Starlight Camping Limited | 27 | 2026-03 |
| Steer Davies & Gleave Limited | 27 | 2025-03 |
| Stephenson Harwood Services Limited | 70 | 2026-04 |
| Stewardship Services (Uket) Limited | 15 | 2025-12 |
| Sthree Management Services Limited | 12 | 2026-05 |
| Sthree PLC | 20 | 2025-11 |
| Sthree UK Holdings Limited | 20 | 2025-11 |
| Strevens Vehicles Holdings Limited | 48 | 2019-12 |
| Swan Investments Group Limited | 39 | 2026-03 |
| Sweco Services UK Limited | 33 | 2018-12 |
| Sweco UK Limited | 27 | 2025-12 |
| Swift Acquisitions Limited | 100 | 2020-02 |
| Switalskis Solicitors Limited | 28 | 2025-09 |
| Synergy Health Sterilisation UK Limited | 45 | 2025-03 |
| Synexus Clinical Research Limited | 37 | 2025-12 |
| Systemiq Limited | 21 | 2024-06 |
| Takeda Development Centre Europe Ltd. | 32 | 2019-03 |
| Talon Outdoor Limited | 81 | 2022-12 |
| Taylor Rose Ttkw Limited | 27 | 2026-03 |
| Technip E&c Limited | 23 | 2025-12 |
| Teneo Financial Advisory Limited | 27 | 2025-12 |
| Teneo Strategy Limited | 44 | 2025-06 |
| Tetra Tech Limited | 19 | 2026-03 |
| Th Re Administration Limited | 21 | 2023-06 |
| Thales Ground Transportation Systems UK Limited | 34 | 2020-12 |
| Thames Water Limited | 7 | 2022-09 |
| The Babraham Institute | 35 | 2026-03 |
| The Binding Site Group Limited | 30 | 2026-03 |
| The Boots Company PLC | 88 | 2026-02 |
| The Brooklyn Brothers Limited | 1 | 2025-06 |
| The Capital Markets Company (UK) Limited | 31 | 2026-03 |
| The Carbon Trust | 17 | 2026-03 |
| The Holmes Care (Group) Limited | 40 | 2019-03 |
| The James Hutton Institute | 21 | 2020-03 |
| The Medical and Dental Defence Union of Scotland | 24 | 2026-06 |
| The Mines Advisory Group | 28 | 2017-06 |
| The Pirbright Institute | 22 | 2019-09 |
| The Rank Group PLC | 0 | 2025-12 |
| The Renewables Infrastructure Group (UK) Limited | 15 | 2025-12 |
| The Simplybiz Group PLC | 29 | 2024-12 |
| Thermo Electron (Management Services) Limited | 45 | 2025-06 |
| Thomas Cook Group PLC | 94 | 2019-03 |
| Thomson Reuters (Professional) UK Limited | 12 | 2025-12 |
| Threadneedle Asset Management Holdings Limited | 18 | 2025-12 |
| Top Shop/top Man (Wholesale) Limited | 75 | 2018-09 |
| Totemic (2014) Holdings Limited | 37 | 2024-06 |
| Towers Watson Limited | 42 | 2025-12 |
| Tr Organisation Limited | 18 | 2018-06 |
| Transport for Wales | 16 | 2026-03 |
| Trescal Limited | 30 | 2019-06 |
| Trg (Holdings) Limited | 48 | 2025-12 |
| Trl Limited | 34 | 2025-12 |
| True Potential Group Limited | 17 | 2025-12 |
| Tsl Limited | 47 | 2025-12 |
| Tt Games Limited | 13 | 2025-12 |
| Ttp Group PLC | 22 | 2022-09 |
| Ttp PLC | 22 | 2022-09 |
| Tulloch Homes Group Limited | 50 | 2026-05 |
| Tuv Sud Limited | 12 | 2025-12 |
| Tyman PLC | 15 | 2019-12 |
| Ubs Asset Management Holding Ltd | 53 | 2025-12 |
| UK Highways Limited | 0 | 2022-06 |
| Unilever U.k. Central Resources Limited | 68 | 2025-12 |
| Universal Pictures International Entertainment Limited | 41 | 2025-12 |
| University of Derby | 27 | 2025-07 |
| Urenco Enrichment Company Limited | 29 | 2025-12 |
| Urenco Limited | 34 | 2025-12 |
| Velocity 360 Limited | 24 | 2025-12 |
| Vercity Management Services Limited | 23 | 2024-06 |
| Vercity Social Infrastructure (UK) Limited | 23 | 2024-06 |
| Vertex Pharmaceuticals (Europe) Limited | 39 | 2025-12 |
| Vestel UK Limited | 13 | 2021-09 |
| Vetpartners Practices Limited | 52 | 2025-12 |
| Vets Now Limited | 51 | 2021-03 |
| Videndum PLC | 55 | 2025-12 |
| Virgin Money PLC | 20 | 2019-12 |
| Virgin Red Limited | 29 | 2025-12 |
| Virgo Health Limited | 7 | 2025-12 |
| Viridor Limited | 28 | 2023-09 |
| Visteon Engineering Services Limited | 25 | 2019-06 |
| Vivergo Fuels Limited | 27 | 2018-03 |
| Volkerservices Limited | 19 | 2025-12 |
| W. Wing Yip & Brothers Trading Group Limited | 31 | 2026-03 |
| W.a.g Payment Solutions PLC | 36 | 2025-12 |
| W.h.palmer & Co.(industries)limited | 47 | 2024-06 |
| Walker Greenbank PLC. | 44 | 2019-07 |
| Wavemaker Limited | 51 | 2025-12 |
| Westover Group Limited | 33 | 2019-12 |
| Williams Grand Prix Engineering Limited | 43 | 2025-12 |
| Willis International Limited | 91 | 2018-06 |
| Winn Solicitors Limited | 81 | 2026-03 |
| Wittington Investments Limited | 14 | 2025-09 |
| Wood Environment & Infrastructure Solutions UK Limited | 65 | 2020-06 |
| Worley Europe Ltd | 32 | 2025-12 |
| Wpp 2005 Limited | 43 | 2025-12 |
| Wpp Media UK Limited | 54 | 2025-06 |
| Wsp Management Services Limited | 14 | 2020-12 |
| Wsp UK Limited | 24 | 2025-12 |
| Wyg Environment Planning Transport Limited | 56 | 2018-09 |
| Xafinity Consulting Limited | 24 | 2026-03 |
| Xpo Holdings UK and Ireland Limited | 31 | 2025-12 |
| Xps Administration Limited | 30 | 2026-03 |
| Yell Limited | 43 | 2026-03 |
| Yougov PLC | 38 | 2026-01 |
| Young & Rubicam Group Limited | 35 | 2025-12 |
| Zenith International (Media) Limited | 65 | 2025-12 |
| Zenithoptimedia Ltd | 54 | 2025-12 |
| Zogenix International Limited | 27 | 2026-01 |