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Their own payment-practices filing · gov.uk

Iron Mountain (UK) PLC pays suppliers in 20 days on average — inside its 90-day stated terms

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

20daysavg time to pay · H2 2025

Their H2 2025 filing puts the average 70 days inside their stated 90-day term.

Faster than mostvs a 31-day median across 6,104 recent filers
Their stated terms
90 days
Paid outside agreed terms
26% of invoices
Paid after 61+ days
1%
Reporting period
1 Jul 2025 – 31 Dec 2025
Source
their gov.uk filing, filed 12 Feb 2026

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

Terms vs reality · their H2 2025 filing

Paid 70 days inside the 90-day term they state

The pattern · last 4 of 4 reports

17 → 20 days — slowing down

The read · computed from their figures

Iron Mountain (UK) PLC's H2 2025 filing puts their average at 20 days against stated terms of 90 days; 26% of invoices were paid outside agreed terms and 1% took 61 days or longer. Filed 12 Feb 2026.

The direction is slower: from 17 days in H1 2024 to 20 now — 3 days slower across their last 4 reports.

On the latest reported averages: Faster than 90% of the 245 large companies reporting in transport & storage.

That is 4 statutory periods on record (earliest H1 2024) — a historical record, not a promise for a new invoice.

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

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.

Quick answers · Iron Mountain (UK) PLC

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 filed report puts the average at day 20; across their last 4 reports it ranged 16–20 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.
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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-01478540 · latest period to 31 Dec 2025

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