Their own payment-practices filing · gov.uk

Dounreay Site Restoration Limited paid suppliers in 13 days on average — within its stated 1–30 day terms

CRN SC307493 · Extraterritorial bodies · 9 statutory reports on record · period to 31 Mar 2023

Dated record. The latest report covers a period ending 31 Mar 2023 and the company hasn’t filed since (it may have dropped below the reporting threshold). Treat the figures as historical.

13daysavg time to pay · H1 2023

Their H1 2023 filing put the average 12 days past the shortest term they state (1 days), still within their 30-day upper term.

Their stated terms: 1–30 days
Paid outside agreed terms: 6% of invoices
Paid after 61+ days: 1%
Reporting period: 1 Oct 2022 – 31 Mar 2023
Source: their gov.uk filing, filed 25 Apr 2023

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

Terms vs reality · their H1 2023 filing

Paid within their stated range — 13 against 1–30 days

PAIDLATE · terms vs the clockdays to pay · 0–40

avg 13d

0 days40 days

reported avg 13 days their filed terms 1–30 days UK median 31 days · n = 6,104 recent filers

Where their invoices landed · share of all invoices

within 30 days 96% 31–60 days 3% 61+ days 1%

Source: their statutory Payment Practices Report #70110, period 1 Oct 2022 – 31 Mar 2023, filed 25 Apr 2023 · gov.uk payment-practices service

Dounreay Site Restoration Limited paid within its stated range, 12 days past the shortest term. 6% of invoices still went outside agreed terms; 1% reached 61 days or more. Self-reported in their statutory H1 2023 filing.

The pattern · last 6 of 9 reports

26 → 13 days — faster across the window

PAIDLATE · the patternavg days per report

Last 6 of 9 filed reports · linear day scale · every period is in the table below · Source: gov.uk payment-practices service

13 days faster across the window. From 26 days in H1 2020 to 13 in the H1 2023 filing; the dashed line marks the 1-day term they state.

The read · computed from their figures

Dounreay Site Restoration Limited's H1 2023 filing put their average at 13 days against stated terms of 1–30 days; 6% of invoices were paid outside agreed terms and 1% took 61 days or longer. Filed 25 Apr 2023.

The direction is faster: from 26 days in H1 2020 to 13 now — 13 days faster across their last 6 reports.

That is 9 statutory periods on record (earliest H2 2018) — a historical record, not a promise for a new invoice.

In their own words · from the filing

Standard payment terms

30 days from invoice date on a correctly rendered invoice

Dispute resolution

Disputes are resolved with the cooperation of the appropriate project manager and the commercial department. The supplier is contacted for their information, and for their assistance in resolving the dispute. An independent adjudication process is available.

Every statutory report on record

Most recent first.

Period	Avg days	Outside terms	61+ days	Filed
H1 2023	13	6%	1%	25 Apr 2023
H1 2022	14	9%	1%	27 Apr 2022
H2 2021	13	6%	1%	22 Oct 2021
H1 2021	18	15%	3%	27 Apr 2021
H2 2020	20	19%	4%	22 Oct 2020
H1 2020	26	25%	2%	7 May 2020
H2 2019	26	22%	2%	29 Oct 2019
H1 2019	28	1%	4%	29 Apr 2019
H2 2018	27	1%	3%	5 Dec 2018

On the public register · Companies House

Company record

Status: Active
Type: Private Limited Company
Incorporated: 24 Aug 2006
Registered office: BUILDING D2003, DOUNREAY, CAITHNESS, KW14 7TZ

0 outstanding charges on the register Accounts due 31 Dec 2026

Open the full record at Companies House.

Illustrative · working-capital arithmetic

What a 13-day cycle ties up

A worked example, not a finding. On a hypothetical £12k/month account, at a 13-day vs a 1-day payment cycle.

≈ £5,000

of invoicing outstanding at any one time on a 13-day cycle — about £4,700 more than the same account would carry at 1-day terms.

Late Payment Act. The Late Payment of Commercial Debts (Interest) Act 1998 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 · Dounreay Site Restoration Limited

Are they getting slower or faster?

Their reported average has moved about 13 days faster over the window (26 → 13 days).

What's their typical pay point?

Their latest filed report put the average at day 13; across their last 6 reports it ranged 13–26 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 Dounreay Site Restoration Limited (free)

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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 6,104 companies with a current statutory report — every sector pooled, not an average of sector medians (how the figure is built).

Report PL-SC307493 · latest period to 31 Mar 2023

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