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Their own payment-practices filing · gov.uk

National Grid Electricity System Operator Limited pays suppliers in 22 days on average — within its stated 3–42 day terms

CRN 11014226 · Other services · 12 statutory reports on record · period to 31 Mar 2026

22daysavg time to pay · H1 2026

Their H1 2026 filing puts the average 19 days past the shortest term they state (3 days), still within their 42-day upper term.

Faster than mostvs a 31-day median across 6,104 recent filers
Their stated terms
3–42 days
Paid outside agreed terms
8% of invoices
Paid after 61+ days
1%
Reporting period
1 Oct 2025 – 31 Mar 2026
Source
their gov.uk filing, filed 29 Apr 2026

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

Terms vs reality · their H1 2026 filing

Paid within their stated range — 22 against 3–42 days

The pattern · last 6 of 12 reports

Holding steady around 22 days

The read · computed from their figures

National Grid Electricity System Operator Limited's H1 2026 filing puts their average at 22 days against stated terms of 3–42 days; 8% of invoices were paid outside agreed terms and 1% took 61 days or longer. Filed 29 Apr 2026.

The pattern is steady — their reported average moves within about ±3 days period to period.

On the latest reported averages: Faster than 80% of the 115 large companies reporting in other services.

That is 12 statutory periods on record (earliest H2 2020) — a historical record, not a promise for a new invoice.

What they tell their suppliers

Payment code: Prompt payment code Offers e-invoicing 1% of invoices in dispute

In their own words · from the filing

Standard payment terms

30 days

Dispute resolution

All disputes raised will be handled by a combination of the dedicated Purchase to Pay team, the Procurement team and the business unit working with the supplier

Every statutory report on record

Most recent first.

PeriodAvg daysOutside terms61+ daysFiled
H1 2026228%1%29 Apr 2026
H2 20252011%2%30 Oct 2025
H1 2025189%1%29 Apr 2025
H2 2024169%1%21 Nov 2024
H1 2024204%0%2 May 2024
H2 20232012%1%31 Oct 2023
H1 20232125%1%28 Apr 2023
H2 20222125%1%27 Oct 2022
H1 20222032%2%30 Apr 2022
H2 20211631%1%29 Oct 2021
H1 20211215%2%29 Apr 2021
H2 20201723%4%29 Oct 2020

On the public register · Companies House

Company record

Status
Active
Type
Private Limited Company
Incorporated
16 Oct 2017
Registered office
ST CATHERINE'S LODGE BEARWOOD ROAD, WOKINGHAM, RG41 5BN
0 outstanding charges on the register Accounts due 31 Dec 2026

Open the full record at Companies House.

Illustrative · working-capital arithmetic

What a 22-day cycle ties up

A worked example, not a finding. On a hypothetical £12k/month account, at a 22-day vs a 3-day payment cycle.

≈ £8,500
of invoicing outstanding at any one time on a 22-day cycle — about £7,500 more than the same account would carry at 3-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 · National Grid Electricity System Operator Limited

Are they getting slower or faster?
Their reported average is steady — within about ±3 days period to period, around 22 days.
What's their typical pay point?
Their latest reports average around day 22, moving within about ±3 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-11014226 · latest period to 31 Mar 2026

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