Filing status
- Accounts due
- 30 September 2026
- Last accounts
- 30 September 2024
- Conf. stmt due
- 22 February 2027
- Last conf. stmt
- 8 February 2026
Energy, Security and Technology UK Limited
- Incorporated
- 9 February 2024 (2 years)
- Industry
- Activities of head offices (70100)
- Directors
- Paul Pheeny
- Owned by
- Amentum Holdings LLC
- Accounts type
- Full
- Region
- North West
- Address
- 305 Bridgewater PlaceBirchwood ParkWarringtonWA3 6XF
Officers 4 active
Officer details are public data from the Companies House register.
Director · Appointed 6 February 2025
British
Born September 1967 (59)
Director · Appointed 6 February 2025
British
Born March 1984 (42)
Pheeny, Paul
Director · Appointed 6 February 2025
American
Born November 1968
Prentice, Joshua David
Secretary · Appointed 9 February 2024
Officer history (1 former)
30 September 2025
6 February 2025
6 February 2025
6 February 2025
Appointed Pheeny, Paul as Director
9 February 2024
Appointed Prentice, Joshua David as Secretary
9 February 2024
Ownership 1 active
People and entities with significant control, from the Companies House PSC register
Amentum Holdings LLC
Corporate entity · Notified 30 September 2024
Owns 75–100% of shares
Limited Liability Company
Reg. no. 7723591
Former controllers (8)
30 September 2024
Ceased Amazon Holdco Inc. — Owns 75–100% of shares (as a trust)
26 September 2024
Ceased Jacobs Engineering Group Inc. — Owns 75–100% of shares
24 September 2024
Ceased Jacobs UK Holdings Limited — Owns 75–100% of shares
24 September 2024
Ceased Jacobs Europe Holdco Limited — Owns 75–100% of shares
24 September 2024
Ceased Jacobs NL Holdings B.V. — Owns 75–100% of shares
24 September 2024
Ceased Jacobs Engineering Inc. — Owns 75–100% of shares
24 September 2024
Ceased Jacobs UK Limited — Owns 75–100% of shares
6 June 2024
Ceased CH2M Hill Holdings Limited — Owns 75–100% of shares
Group structure 14 companies
Ownership group derived from the Companies House PSC register
Energy, Security and Technology UK Limited This company
Amentum Clean Energy Limited Owns 75–100% of shares
Alkali Metal Processing Limited Owns 25–50% of shares
Amentum Clean Energy International Limited Owns 75–100% of shares
Fast Reactor Technology Limited Owns 50–75% of shares
PWR Power Projects Limited Owns 25–50% of shares
Amentum E&C Limited Owns 75–100% of shares
Amentum Enterprise Asset Solutions Construction Limited Owns 75–100% of shares
Amentum Enterprise Asset Solutions Limited Owns 75–100% of shares
Amentum International Nuclear Services Limited Owns 75–100% of shares
Cavendish Dounreay Partnership Limited Owns 25–50% of shares
Dounreay Site Restoration Limited Owns 75–100% of shares
Energy, Safety and Risk Consultants (UK) Limited Owns 75–100% of shares
National Nuclear Corporation Limited Owns 75–100% of shares
Filings
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