TXT In plain English
Company description
AMENTUM INTERNATIONAL NUCLEAR SERVICES LIMITED is a UK company whose Companies House status is “Active” and whose registered company type is “Private Limited Company”. Incorporated on 10 August 2005; registered for 21 years; registered office reported in WARRINGTON, UNITED KINGDOM. Its primary declared activity is 71129 · Other engineering activities.
This BritDB profile also contains linked public records: 3 PSC records, 1 procurement record. This description is assembled from public data, is not a reliability assessment, and should be checked against the cited sources before a legally significant decision.
Web facts are never added from a name match alone. Internet enrichment requires the exact Companies House ID in Wikidata, and ambiguous results are excluded.
01 Company overview
Identity and registration
- Official name
- AMENTUM INTERNATIONAL NUCLEAR SERVICES LIMITED
- Company number
- 05532606
- Company type
- Private Limited Company
- Status
- Active
- Country of origin
- United Kingdom
- Dissolution date
- Not supplied
- Accounts category
- FULL
- Mortgage charges
- 0 total · 0 outstanding · 0 satisfied
- Limited partnership members
- 0 general · 0 limited
A registered office is not necessarily a trading location. The address is reproduced from the Companies House bulk record and should be interpreted in that legal context.
02 Filing dates
Accounts and statements
Last accounts made up to
27 September 2024Next accounts due
30 September 2026Last statement made up to
22 August 2025Next statement due
5 September 2026BritDB does not infer overdue status when the source does not state it.
03 Supplier payments
Payment practices and performance
- Reporting period
- 1 January 2025 – 30 June 2025
- Filed
- 30 July 2025
- Shortest standard term
- 7 days
- Longest standard term
- 60 days
- E-invoicing offered
- Yes
- Supply-chain finance
- Not offered
- Payment codes
- No
- Construction retentions
- No qualifying construction contracts
Complete reported payment fields
- Policy regime
- Regime-1
- Financial period started
- 1 October 2024
- Qualifying contracts
- Yes
- Payments made
- Yes
- Invoices paid in 31–60 days
- 20.0%
- Maximum contractual payment period
- 60 days
- Supplier-list charging policy
- No
- Supplier-list charges made
- No
Maximum contractual payment information
N.A
Reported terms and dispute process
- Standard payment terms
The company does not have a standard contractual length of time for payment of invoices. The procurement team will generally set payment terms in conjunction with the supplier. If terms are not defined by one of the parties the default period will be set to 30 days.
- Other payment-term information
N.A
- Dispute resolution process
In the event of an invoice being disputed, the supplier should contact the accounts payable team by email. If the accounts payable team do not know why the invoice has not been approved for payment the matter will be passed to the appropriate department/contact in order to resolve the dispute.
Earlier payment reports (11 shown)
- 26.0 average days to pay21.0% outside terms
- 34.0 average days to pay15.0% outside terms
- 24.0 average days to pay21.0% outside terms
- 22.0 average days to pay16.0% outside terms
- 30.0 average days to pay16.0% outside terms
- 62.0 average days to pay23.0% outside terms
- 28.0 average days to pay44.0% outside terms
- 28.0 average days to pay18.0% outside terms
- 24.0 average days to pay17.0% outside terms
- 24.0 average days to pay19.0% outside terms
- 26.0 average days to pay6.0% outside terms
This is a company-submitted statutory disclosure, not a credit rating. BritDB preserves the reporting period and links the report only through the Companies House number supplied by the official service. Percentages describe payments made during that period and may change in later reports.
04 Supply-chain transparency
Modern slavery statement
- Organisation
- AMENTUM INTERNATIONAL NUCLEAR SERVICES LIMITED
- Group submission
- Yes
- Parent organisation
- JACOBS U.K. LIMITED
- Statement period
- 1 October 2020 – 30 September 2021
- Approved
- 22 March 2022
- Sectors
- Construction, civil engineering and building products
Organisation structure
Covered in the statement
Policies
Covered in the statement
Risk assessment
Covered in the statement
Due diligence
Covered in the statement
Training
Covered in the statement
Goals and KPIs
Covered in the statement
Full statement information supplied to the registry
- Reported turnover band
- Over £500 million
- Years producing statements
- More than 5 years
- ILO indicators included
- Not answered
- Registry record updated
- 28 March 2022
A registry entry records what the organisation declared in its statement. It is not an independent audit. Group statements can cover several companies; BritDB preserves each exact source-supplied company-number link and excludes approver names and email addresses.
05 Public procurement
Contracts Finder awards
Tyne and Wear - Development Plans/Support
HIGHWAYS ENGLAND COMPANY LIMITED · ocds-b5fd17-e3f98a5f-7bb6-4773-afd8-17aa51c1ee2e
- Supplier named in award
- CH2M HILL INTERNATIONAL NUCLEAR SERVICES LTD
- Award value
- £45,431.30
- Contract period
- 16 March 2021 – 30 March 2021
- Published
- 16 March 2021
- Procedure
- Call-off from a framework agreement
- Main CPV
- 71311210
- Source release ID
- ocds-b5fd17-e3f98a5f-7bb6-4773-afd8-17aa51c1ee2e-2021-03-16T19:52:29Z
The supplier link is exact, but the award remains buyer-published procurement data. BritDB requires the GB-COH identifier supplied in the Contracts Finder OCDS release and does not infer suppliers from similar names.
06 Ownership and control
People with significant control
Energy, Security And Technology Uk Limited
- Owns 75% or more of shares
- Controls 75% or more of voting rights
- Can appoint or remove directors
- Country registered
- England
- Legal authority
- Companies Act 2006
- Legal form
- Private Limited Company
- Place registered
- Register Of Companies For England & Wales
- Registration number
- 15475788
- Notified
- 5 June 2024
Ch2m Hill Holdings Limited
- Owns 75% or more of shares
- Controls 75% or more of voting rights
- Can appoint or remove directors
- Country registered
- England
- Legal authority
- United Kingdom (England)
- Legal form
- Corporation
- Place registered
- Companies House
- Registration number
- 12661700
- Notified
- 14 July 2020
- Ceased
- 5 June 2024
No individual or entity with signficant control
- Notified
- 22 August 2016
- Ceased
- 14 July 2020
PSC records are company-filed public-register information. When the exact same displayed individual name occurs at multiple companies, BritDB offers a non-indexed cross-reference page. It is a name match only, not proof that the records describe the same person. Service addresses and partial dates of birth are deliberately omitted.
07 Charity register
Charity Commission links
No exact company-number link in this snapshot
The Charity Commission extract did not explicitly associate this Companies House number with a charity. BritDB does not use a name-only match to fill the gap.
This company-level check covers the Charity Commission for England and Wales. Links are accepted only when the official extract supplies this exact company registration number. Scottish charities now have separate OSCR profiles, but OSCR’s bulk fields do not provide a Companies House number, so BritDB does not infer a company link.
08 Northern Ireland charity register
CCNI exact company links
No unambiguous company-number link found
The CCNI source number did not resolve uniquely to this Companies House record. BritDB did not use a name or address match.
CCNI publishes company numbers without a jurisdiction prefix. BritDB links only when the plausible padded UK and NI candidates resolve to exactly one Companies House company.
09 Sanctions screening
UK Sanctions List
No exact business-registration-number link found
The imported UK Sanctions List did not supply this Companies House number as a UK-linked business identifier. BritDB did not attempt a name-only match.
No exact link is not sanctions clearance. UK restrictions can apply through ownership or control even where an entity is not separately named. Always use the current official list and obtain appropriate advice for a legally significant decision.
10 Public procurement
Find a Tender links
No exact GB-COH link in this snapshot
Find a Tender did not explicitly identify this Companies House number in a procurement party. BritDB did not attempt a name-only match.
These links use only the GB-COH identifier supplied in the procurement record. A company may have other public-sector work that is absent, older, below publication thresholds or published without a Companies House identifier.
11 Environmental register
Environment Agency waste registrations
No exact company-number registration linked
The licensed Environment Agency subset did not contain this exact Companies House number. BritDB did not attempt a name-only match.
This is a privacy-reduced, exact-company subset. The full official register also includes sole traders and applicants without a matching Companies House number. Check the current Environment Agency register before relying on registration status.
12 Nature of business
Standard Industrial Classification
13 Connected public record
Checks beyond the company register
Charity Commission
0 exact company-number links.
Northern Ireland charities
0 unambiguous company-number links.
Public contracts
0 procurement processes linked by exact GB-COH identifier.
Waste register
0 exact company-number registrations.
Corporate notices
The Gazette is not yet connected.
UK Sanctions List
No exact business-registration-number link in this report.
A checked source with no exact link is not a clean bill of health. Unchecked sources remain unknown, while sanctions may also apply through ownership or control of a listed person or entity.
14 Record timeline
Dates in the bulk record
- Confirmation statement
Latest confirmation statement made up to this date
- Company name
Previous name: CH2M HILL INTERNATIONAL NUCLEAR SERVICES LTD
- Accounts
Latest accounts made up to this date
- Incorporation
Company incorporated
15 Provenance
Sources for this profile
Identity, address, status, dates, SIC, previous names and mortgage totals.
Statutory supplier-payment reports linked by the exact source-supplied Companies House number.
Annual statement summaries linked by exact source company number.
Historic awards linked by exact source-supplied GB-COH company identifier.
Current and ceased significant-control records joined by exact company number.
Daily England and Wales extract matched only by the official company registration number.
Daily CCNI export with company links only where the source number resolves unambiguously.
Complete FCDO list checked by exact UK-linked business registration number.
Procurement parties checked only through exact GB-COH identifiers.
Licensed subset linked only by exact Companies House number.
Financial regulation and licences.
Companies House, Charity Commission, OSCR and UK Sanctions List information is public-register data. BritDB reproduces and organises it with source-specific limits; official external links are kept on the dedicated source pages.