Industry ranking
Score of 88.27/100 qualifies for PaymentCheck Certification
DIAMOND LIGHT SOURCE LIMITED demonstrates a consistent trend of prompt payments, with an average payment time of 28 days. A significant majority of 89% of invoices are consistently settled within 30 days, indicating a very positive trajectory in payment speed.
While generally reliable, 11% of payments are made late, with 2% extending beyond 60 days. This introduces a minor element of unpredictability for a small portion of invoices, suggesting a low but present risk of extended payment cycles for certain transactions.
DIAMOND LIGHT SOURCE LIMITED is a largely reliable payer, with most invoices settled promptly, making them an attractive partner. Suppliers should factor in the 11% late payment rate, particularly the 2% over 60 days, when forecasting cash flow, but significant risk mitigation beyond standard credit terms is likely unnecessary.
| Reporting Period | Filing Date | Average Time to Pay (days) | Paid within 30 days | Paid 31-60 days | Paid after 60 days | Not Paid within Terms |
|---|---|---|---|---|---|---|
| 01 Oct 2025 - 31 Mar 2026 | 23 Apr 2026 | 27 | 87% | 11% | 2% | 14% |
| 01 Apr 2025 - 30 Sept 2025 | 30 Oct 2025 | 28 | 89% | 9% | 2% | 11% |
| 01 Oct 2024 - 31 Mar 2025 | 08 Apr 2025 | 27 | 90% | 8% | 2% | 11% |
| 01 Apr 2024 - 30 Sept 2024 | 24 Oct 2024 | 27 | 90% | 9% | 1% | 11% |
| 01 Oct 2023 - 31 Mar 2024 | 22 Apr 2024 | 28 | 88% | 9% | 3% | 12% |
| 01 Apr 2023 - 30 Sept 2023 | 16 Oct 2023 | 30 | 75% | 22% | 3% | 26% |
| 01 Oct 2022 - 31 Mar 2023 | 25 Apr 2023 | 28 | 87% | 10% | 3% | 13% |
| 01 Apr 2022 - 30 Sept 2022 | 18 Oct 2022 | 30 | 86% | 10% | 4% | 15% |
| 01 Oct 2021 - 31 Mar 2022 | 14 Apr 2022 | 29 | 84% | 12% | 4% | 16% |
| 01 Apr 2021 - 30 Sept 2021 | 21 Oct 2021 | 29 | 85% | 10% | 5% | 15% |
| 01 Oct 2020 - 31 Mar 2021 | 21 Apr 2021 | 30 | 81% | 13% | 6% | 19% |
| 01 Apr 2020 - 30 Sept 2020 | 21 Oct 2020 | 32 | 79% | 16% | 6% | 22% |
| 01 Oct 2019 - 31 Mar 2020 | 11 May 2020 | 30 | 82% | 14% | 4% | 15% |
| 01 Apr 2019 - 30 Sept 2019 | 23 Oct 2019 | 34 | 78% | 15% | 8% | 23% |
| 01 Oct 2018 - 31 Mar 2019 | 30 Apr 2019 | 33 | 73% | 21% | 6% | 28% |
| 01 Apr 2018 - 30 Sept 2018 | 23 Oct 2018 | 32 | 72% | 22% | 6% | 28% |
This information is as reported by the business, and responses are in their own words.
Standard payment terms
Diamond Light Source Limited's standard payment terms are 30 days from the date of invoice receipt. There were no changes to the standard payment terms in the reporting period.
Were there any changes to the standard payment terms in the reporting period?
No information available
Any other information about payment terms
No additional information
Maximum contractual payment period agreed
30
For payment related queries, please contact Accounts payable on the email below, copying in the requestor of the purchase order, or call the Accounts payable department: dlsaccountspayable@diamond.ac.uk. Purchase order queries - the Supplier should contact the requestor of the purchase order or procurement.
Has this business signed up to a code of conduct or standards on payment practices?
For example, signatories to The Prompt Payment Code must commit to paying 95% of their invoices within 60 days.
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Does this business offer e-invoicing in relation to qualifying contracts?
This is where suppliers can electronically submit and track invoices. It's not just allowing suppliers to email them an invoice.
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Does this business offer supply chain finance?
This is where a supplier who has submitted an invoice can be paid by a third-party finance provider earlier than the agreed payment date. The business would then pay the finance provider the invoiced sum.
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Under its payment practices and policies, can this business deduct sums from payments under qualifying contracts as a charge for remaining on a supplier list?
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During the reporting period, did the business deduct sums from payments as a charge for remaining on a supplier list?
No information available
Diamond Light Source Limited is a private limited company registered at Harwell Science and Innovation Campus in Oxfordshire. It was incorporated in 2002, initially under the name Codenote Limited before adopting its current name shortly afterwards. Companies House records its nature of business under the SIC code for other research and experimental development on natural sciences and engineering. This places the company within scientific research activity rather than commercial trading, consistent with its site location on a science and innovation campus. No further detail on specific projects, facilities or services is available from the supplied evidence, so the summary is limited to this registered activity description.
Generated from the company's website and Companies House records. Sources: find-and-update.company-information.service.gov.uk