TXT In plain English
Company description
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 8 November 1973; registered for 52 years; registered office reported in WARRINGTON, CHESHIRE, ENGLAND. Its primary declared activity is 74909 · Other professional, scientific and technical activities n.e.c..
This BritDB profile also contains linked public records: 1 PSC record, 11 procurement records, 1 waste registration. 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
- INTERNATIONAL NUCLEAR SERVICES LIMITED
- Company number
- 01144352
- 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
31 March 2025Next accounts due
31 December 2026Last statement made up to
25 July 2026Next statement due
8 August 2027BritDB does not infer overdue status when the source does not state it.
03 Workforce reporting
Gender pay gap
- Median bonus gap
- 53.0%
- Mean bonus gap
- 26.0%
- Women receiving bonus
- 80.0%
- Men receiving bonus
- 81.2%
- Women in top quartile
- 26.0%
- Women in upper middle quartile
- 34.0%
- Women in lower middle quartile
- 31.0%
- Women in lower quartile
- 66.0%
Earlier reporting years (8)
- Less than 25019.0% median hourly gap
- Less than 25015.0% median hourly gap
- Less than 25016.0% median hourly gap
- Less than 25027.6% median hourly gap
- Less than 25027.6% median hourly gap
- Less than 25030.8% median hourly gap
- Less than 25030.8% median hourly gap
- Less than 25031.0% median hourly gap
Positive gaps mean men were paid more; negative gaps mean women were paid more. These figures are employer-reported and describe the workforce distribution, not equal pay for the same job. The company link uses the exact Companies House number supplied by the service.
04 Global legal identity
Legal Entity Identifier
INTERNATIONAL NUCLEAR SERVICES LIMITED
LEI 984500861F0B9BBAE986 · jurisdiction GB
- Legal form
- H0PO
- Entity category
- GENERAL
- Entity created
- 8 November 1973
- Initial LEI registration
- 26 February 2021
- LEI last updated
- 26 February 2022
- Next renewal
- 26 February 2022
- Managing LOU
- 529900T8BM49AURSDO55
- Other legal names
- INTERNATIONAL NUCLEAR FUELS LIMITED; BNFL ENRICHMENT LIMITED
- Legal address
- Herdus House Ingwell Drive, Westlakes Science & Technology Park, Moor Row, GB-CMA, CA24 3HU, GB
- Headquarters address
- Herdus House Ingwell Drive, Westlakes Science & Technology Park, Moor Row, GB-CMA, CA24 3HU, GB
GLEIF parent-reporting exceptions
DIRECT ACCOUNTING CONSOLIDATION PARENT
NO_LEI
ULTIMATE ACCOUNTING CONSOLIDATION PARENT
NO_LEI
LEI data provides global legal identity and source-reported relationships, not a credit or regulatory approval. BritDB links Level 1 identities only through GLEIF’s Companies House registration-authority identifier and exact company number; Level 2 parent and fund relationships and reporting exceptions are reproduced as supplied by GLEIF.
05 Public procurement
Contracts Finder awards
Peer Review of Criticality Assessment of Contents in SWTC 500L Drum 3m3 Drums (RWM307)
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-8490fd9d-2374-40c4-b064-8a9b23e7983e
- Supplier named in award
- International Nuclear Services
- Award value
- £147,470
- Contract period
- 14 May 2020 – 31 March 2021
- Published
- 7 April 2022
- Procedure
- Call-off from a framework agreement
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-8490fd9d-2374-40c4-b064-8a9b23e7983e-2022-04-07T17:32:51+01:00
The assessment of dose during normal conditions of transport (NCT)
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-1507dfa7-4b4c-427b-8301-c3ea934f745d
- Supplier named in award
- International Nuclear Services
- Award value
- £193,284
- Contract period
- 14 May 2020 – 31 March 2021
- Published
- 26 May 2020
- Procedure
- Single tender action (below threshold)
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-1507dfa7-4b4c-427b-8301-c3ea934f745d-2020-05-26T16:11:32+01:00
DECP LFE Presentations
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-6976aa0b-ce84-433e-9722-d676f9da42c6
- Supplier named in award
- International Nuclear Services
- Award value
- £15,824
- Contract period
- 3 March 2020 – 31 March 2020
- Published
- 29 May 2020
- Procedure
- Call-off from a framework agreement
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-6976aa0b-ce84-433e-9722-d676f9da42c6-2020-05-29T14:52:43+01:00
Part 1-2 Peer Review of the Development of a Conceptual Design for RSBTC
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-304a7ea3-866c-401f-a9ac-4e4c93e1e9ba
- Supplier named in award
- International Nuclear Services
- Award value
- £15,760
- Contract period
- 3 March 2020 – 30 April 2020
- Published
- 29 May 2020
- Procedure
- Call-off from a framework agreement
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-304a7ea3-866c-401f-a9ac-4e4c93e1e9ba-2020-05-29T14:46:04+01:00
Production of User Requirement and System Requirement Documents for RWM Rail Wagon(s)
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-82968847-7384-4967-8d7b-092c4ea70851
- Supplier named in award
- International Nuclear Services
- Award value
- £55,629
- Contract period
- 6 February 2020 – 31 March 2020
- Published
- 29 May 2020
- Procedure
- Call-off from a framework agreement
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-82968847-7384-4967-8d7b-092c4ea70851-2020-05-29T14:03:20+01:00
Review of the 500L Robust Shielded Drum Stillage
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-a6340042-41d7-4d59-aebe-ad4a415ce438
- Supplier named in award
- International Nuclear Services
- Award value
- £35,514
- Contract period
- 8 January 2020 – 31 March 2020
- Published
- 13 January 2020
- Procedure
- Call-off from a framework agreement
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-a6340042-41d7-4d59-aebe-ad4a415ce438-2020-01-13T14:28:05Z
STC Development Stage 4
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-d1304b07-995b-4c9e-acd5-f5bf10f272e1
- Supplier named in award
- International Nuclear Services
- Award value
- £373,213
- Contract period
- 1 November 2019 – 30 September 2020
- Published
- 5 November 2019
- Procedure
- Call-off from a framework agreement
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-d1304b07-995b-4c9e-acd5-f5bf10f272e1-2019-11-05T11:43:29Z
Peer Review Costs
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-899c07ff-397c-47a5-ace2-a09de3f5335b
- Supplier named in award
- International Nuclear Services
- Award value
- £68,617.22
- Contract period
- 21 October 2019 – 27 March 2020
- Published
- 15 June 2020
- Procedure
- Call-off from a framework agreement
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-899c07ff-397c-47a5-ace2-a09de3f5335b-2020-06-15T13:09:44+01:00
Further Development of ARC for Transport Packages
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-356783bc-499d-4ef9-b70e-e8974b1e786b
- Supplier named in award
- International Nuclear Services
- Award value
- £97,443.61
- Contract period
- 18 July 2019 – 31 March 2020
- Published
- 18 July 2019
- Procedure
- Call-off from a framework agreement
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-356783bc-499d-4ef9-b70e-e8974b1e786b-2019-07-18T13:20:02+01:00
Phase 4 Manufacturability and Bolt Testing
RADIOACTIVE WASTE MANAGEMENT LIMITED · ocds-b5fd17-1ae9f4b4-25ba-4455-b7b0-8f310b90a6eb
- Supplier named in award
- International Nuclear Services
- Award value
- £204,044
- Contract period
- 15 January 2019 – 31 March 2019
- Published
- 1 February 2021
- Procedure
- Call-off from a framework agreement
- Main CPV
- 73000000
- Source release ID
- ocds-b5fd17-1ae9f4b4-25ba-4455-b7b0-8f310b90a6eb-2021-02-01T11:07:25Z
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
The Secretary Of State For Energy, Security And Net Zero
- Can appoint or remove directors
- Legal authority
- Companies Act 2006
- Legal form
- Secretary Of State
- Notified
- 6 April 2016
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
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
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
1 procurement process linked by exact GB-COH identifier.
Waste register
1 exact company-number registration.
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
- Detected change
Confirmation statement due date: 2026-08-08 → 2027-08-08
- Confirmation statement
Latest confirmation statement made up to this date
- 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.
Annual employer reports linked by the exact source-supplied Companies House number.
Global legal identities linked through Companies House registration authority RA000585.
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.