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Their own payment-practices filing · gov.uk

How long does Iron Mountain (UK) PLC take to pay its suppliers?

CRN 01478540 · Transport & storage · 4 statutory reports on record · period to 31 Dec 2025

20days
their reported average time to pay suppliers, latest period
Faster than mostvs a 31-day median across 6,185 recent filers

Self-reported figure from their statutory filing. How this is compiled.

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On the public register · Companies House

Company record

Status
Active
Type
Public Limited Company
Incorporated
11 Feb 1980
Registered office
MPN2, LUTTERWORTH, LE17 4UE
13 outstanding charges — secured borrowing registered Accounts due 30 Jun 2027

Open the full record at Companies House.

Terms vs reality

Stated terms: 0–90 days. Reported average: 20.

Stated terms0–90d
+20 days
Reported avg20d

At a glance

The key figures

0–90d
their stated terms
26%
invoices paid outside terms
+3d
slower over the window
±2d
steady pattern

Vs peers · latest reported averages

fasterslower
Faster than 90% of the 248 large companies reporting in transport & storage.

The pattern

Getting slower

Average days to pay across their last 4 statutory reports.

17
16
18
20
H1 2024H2 2024H1 2025H2 2025

Where their supplier invoices land · latest period

within 30 days 80% 31–60 days 19% 61+ days 1%

The read · computed from their figures

Iron Mountain (UK) PLC has filed 4 statutory payment periods (earliest H1 2024). Their latest report puts the average at 20 days against stated terms of 0–90 days.

The direction is slower: from 17 to 20 days over the window — about 3 days slower.

In the latest period 26% of invoices were paid outside their agreed terms, and 1% landed 61+ days out.

What they tell their suppliers

Payment code: The Prompt Payment Code Offers supply-chain finance 77% of invoices in dispute

In their own words · from the filing

Standard payment terms

Iron Mountain adopts standard payment terms. Global standard payment terms are 60-days, with a UK exception of 45-days. This policy is not published on our website.

Dispute resolution

Non PO Invoice: Invoice approval, Invoice mismatch, Invoice query - Will be routed to IRM reviewer/approver. PO Invoice: GR booking, PO query, PO discrepancies - Will be routed to IRM requestor/buyer.

Every statutory report on record

Most recent first.

PeriodAvg daysOutside terms61+ daysFiled
H2 20252026%1%12 Feb 2026
H1 2025182%0%1 Aug 2025
H2 20241629%1%31 Jan 2025
H1 2024172%2%18 Nov 2024

Working-capital effect

What a 20-day cycle ties up

Illustrative. On a hypothetical £12k/month account, at a 20-day vs a 0-day payment cycle.

≈ £8,000
of invoicing outstanding at any one time on a 20-day cycle — about £7,900 more than the same account would carry at 0-day terms.

Late Payment Act. The Late Payment of Commercial Debts Act lets a supplier charge statutory interest and fixed compensation on invoices paid past agreed terms. Work out what a late invoice is worth → Whether it applies depends on your contract — check with an adviser.

Quick answers

Are they getting slower or faster?
Their reported average has moved about 3 days slower over the window (17 → 20 days).
What's their typical pay point?
Their latest reports average around day 20, moving within about ±2 days. Treat that as a historical reference point, not a promise for a new invoice.
Can I see what this means for my invoices?
Run the live check — it re-reads their record and their live Companies House file, on the amount you invoice.

Stay ahead

Watch Iron Mountain (UK) PLC (free)

Their next payment report is due ≈ 29 Jul 2026. We watch their public record and email you when something changes — a new payment report, late filings, insolvency markers, new charges.

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More large companies in transport & storage

Interconnector (UK) Limited · Iss Group Holdings Limited · Iag Cargo Limited · Jack Richards & Son Limited · Hs1 Limited · James and James Fulfilment Ltd

How UK payment reporting works

What is a Payment Practices Report?
UK companies and LLPs above a size threshold — broadly, two of: turnover over £54m, balance sheet over £27m, or more than 250 employees — must report twice a year, under the Reporting on Payment Practices and Performance Regulations 2017, how quickly they actually pay suppliers: the average time to pay, the share of invoices paid in 30 days or fewer, 31 to 60 days and 61 days or longer, and their standard payment terms. Those thresholds apply to financial years beginning on or after 6 April 2025; for earlier financial years they were £36m and £18m, with the same 250-employee test.
What does "paid outside agreed terms" mean?
The share of invoices paid later than the terms in the supplier contract. If terms are 30 days and an invoice is paid on day 45, it counts as paid outside terms, regardless of the headline average.
How often is this data updated?
Each report covers a six-month period and must be filed within 30 days of that period ending, so a company's record refreshes roughly twice a year. PaidLate re-reads the register as new reports are filed.
Is this official government data?
The underlying payment figures come from the company's own statutory filings on the gov.uk payment-practices service; company-status data comes from Companies House. PaidLate calculates trends, comparisons and summaries from those records. It does not use surveys or credit-agency scores.

How this is compiled. Built from official records only: Companies House and the gov.uk payment-practices service. The payment figures are self-reported — companies over the size threshold must file them by law and the board signs them off. No credit-agency data. The numbers are theirs; the plain-English read is ours. This is information compiled from public records under the Open Government Licence v3.0 — not a credit rating and not advice.

The 31-day comparison figure is the median across 6,185 companies with a current statutory report — every sector pooled, not an average of sector medians (how the figure is built).

Report PL-01478540 · latest period to 31 Dec 2025

Verify the original Companies House file

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