30 Fair PaymentHow fast UK companies pay their suppliers
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Amentum International Nuclear Services Limited

Registered as AMENTUM INTERNATIONAL NUCLEAR SERVICES LIMITED. Company number 05532606. 15 payment practices reports on file, the latest for the period ending 30 June 2025, filed 30 July 2025.

26days on average to pay

  • Within 30 days
  • 31 to 60 days
  • Over 60 days

In the reporting period from 1 January 2025 to 30 June 2025, Amentum International Nuclear Services Limited reported that it took an average of 26 days to pay its suppliers' invoices. It paid 78% of invoices within 30 days, 20% in 31 to 60 days and 2% after more than 60 days. It said 14% of invoices were not paid within the agreed terms.

That average is faster than 64% of the 6,220 companies whose latest report covers a period ending since May 2025. A year earlier, in the period to 30 June 2024, the average was 34 days, so it is 8 days faster now.

Average days to pay, report by report

30 26 Dec 2019 24 Jun 2020 24 Dec 2020 28 Jun 2021 28 Dec 2021 62 Jul 2022 30 Dec 2022 22 Jun 2023 24 Dec 2023 34 Jun 2024 26 Dec 2024 26 Jun 2025

Bars are labelled with the month the period ended. The dashed line marks 30 days.

Every report filed

PeriodFiledAverage daysWithin 30 days31 to 60Over 60Not within termsSource
Jan to Jun 2025 30 Jul 2025 26 78%20%2%14% Report
Jul to Dec 2024 14 Jan 2025 26 82%17%1%21% Report
Jan to Jun 2024 10 Jul 2024 34 70%27%3%15% Report
Jul to Dec 2023 11 Jan 2024 24 79%18%3%21% Report
Jan to Jun 2023 28 Jul 2023 22 83%16%1%16% Report
Jul to Dec 2022 26 Jul 2023 30 82%12%5%16% Report
Jan to Jul 2022 21 Jul 2022 62 71%25%4%23% Report
Jul to Dec 2021 27 Jan 2022 28 72%24%4%44% Report
Jan to Jun 2021 30 Jul 2021 28 71%19%10%18% Report
Jul to Dec 2020 29 Jan 2021 24 78%18%4%17% Report
Jan to Jun 2020 30 Jul 2020 24 76%17%7%19% Report
Jul to Dec 2019 13 Jan 2020 26 73%21%6%6% Report
Jan to Jun 2019 1 Jul 2019 24 78%13%9%9% Report
Jul to Dec 2018 1 Jul 2019 13 85%13%2%2% Report
Jan to Jun 2018 2 Jul 2018 27 75%19%6%24% Report

Source: the company's filings on Check payment practices. Contains public sector information licensed under the Open Government Licence v3.0. Figures are as filed. We do not change them.