Amentum E&C Limited

Active04967961 Private limited company
Incorporated
18 November 2003 (22 years)
Previously known as
Jacobs E&C Limited (until 30 September 2024)
Aker Solutions E&C Ltd (until 1 March 2011)
Aker Kvaerner Engineering Services Limited (until 3 April 2008)
This list may be incomplete. See all names on Companies House
Industry
Development of building projects (41100)
Engineering design activities for industrial process and production (71121)
specialised design activities (74100)
Directors
Owned by
Accounts type
Full
Region
North West
Address
305 Bridgewater Place
Birchwood Park
Warrington
WA3 6XF

Filing status

Accounts due
30 September 2026
Last accounts
27 September 2024
Conf. stmt due
2 December 2026
Last conf. stmt
18 November 2025

Officers 3 active

Officer details are public data from the Companies House register.

Director · Appointed 1 October 2025
Also at Amentum Facility Management UK Ltd., National Nuclear Corporation Limited, Amentum (UK) Ltd. · more companies
British
Born March 1984 (42)
Director · Appointed 12 May 2025
Also at Amentum International Nuclear Services Limited, Amentum Enterprise Asset Solutions Construction Limited, Cavendish Dounreay Partnership Limited · more companies
British
Born September 1967 (59)
Prentice, Joshua David
Secretary · Appointed 1 June 2024
Officer history (32 former)
1 October 2025
Appointed Jones, Loren Michael as Director
30 September 2025
Resigned White, Andrew John as Director
12 May 2025
Appointed Shaw, Martin Warwick as Director
21 October 2024
Resigned Linseisen, Anita as Director
1 June 2024
Appointed Prentice, Joshua David as Secretary
1 June 2024
Resigned Roberts, Geoffrey as Secretary
12 January 2024
Resigned Wiemelt, Karen as Director
21 August 2023
Resigned Holman, Rhona Mary as Secretary
21 August 2023
Appointed Roberts, Geoffrey as Secretary
10 February 2023
Appointed Holman, Rhona Mary as Secretary
10 February 2023
Resigned Chaudhary, Tejender as Secretary
1 December 2021
Appointed Linseisen, Anita as Director
1 December 2021
Resigned Miles, Sally Linda Joyce as Director
16 August 2021
Appointed Wiemelt, Karen as Director
16 August 2021
Resigned White, Clive Thomas as Director
9 December 2020
Resigned Ellis, David as Director
30 November 2020
Appointed White, Andrew John as Director
30 November 2020
Appointed White, Clive Thomas as Director
30 November 2020
Resigned Shattock, Jonathan R. as Director
3 June 2019
Appointed Miles, Sally Linda Joyce as Director
3 June 2019
Appointed Ellis, David as Director
26 April 2019
Resigned Seaton, Paul as Director
29 June 2018
Appointed Shattock, Jonathan R. as Director
1 June 2018
Appointed Chaudhary, Tejender as Secretary
1 June 2018
Resigned Norris, Michael Timothy as Secretary
5 December 2016
Resigned Power, Leon Anthony as Director
2 November 2016
Appointed Seaton, Paul as Director
7 October 2016
Resigned Doyle, John Conor as Director
20 October 2014
Appointed Power, Leon Anthony as Director
25 September 2014
Resigned Fleetwood, Michael William as Director
18 October 2013
Appointed Doyle, John Conor as Director
18 October 2013
20 December 2011
Appointed Norris, Michael Timothy as Secretary
20 December 2011
Resigned Fernie, John William David as Secretary
22 September 2011
Appointed Irvin, Robert Anthony Michael, Dr as Director
22 September 2011
Appointed Fleetwood, Michael William as Director
22 September 2011
Resigned Cnossen, Johan Piet as Director
22 September 2011
Resigned Gordon, Douglas Alexander as Director
31 May 2010
Resigned Ley, David Robert as Director
11 February 2010
Appointed Cnossen, Johan Piet as Director
2 December 2009
Resigned Mcwilliams, Edward as Director
12 September 2008
Appointed Gordon, Douglas Alexander as Director
13 August 2008
Resigned Tautra, Jarle as Director
28 June 2006
Appointed Mcwilliams, Edward as Director
17 February 2006
Resigned Leggett, Mark Richard as Director
17 February 2006
Appointed Ley, David Robert as Director
30 September 2005
Resigned Siversten, Ole Kristian as Director
27 May 2005
Resigned Tay, Nigel Rory George as Director
1 December 2004
Resigned Gamble, Nigel William as Secretary
1 December 2004
Appointed Fernie, John William David as Secretary
28 September 2004
Appointed Tay, Nigel Rory George as Director
13 September 2004
Appointed Gamble, Nigel William as Secretary
13 September 2004
Appointed Leggett, Mark Richard as Director
13 September 2004
Resigned Oliver, Malcolm William as Director
31 August 2004
Resigned Connell, David Richard as Secretary
8 December 2003
Appointed Woods, Ronald Ernest as Director
8 December 2003
Appointed Oliver, Malcolm William as Director
8 December 2003
Appointed Siversten, Ole Kristian as Director
8 December 2003
Appointed Connell, David Richard as Secretary
8 December 2003
Appointed Tautra, Jarle as Director
8 December 2003
Resigned Woods, Ronald Ernest as Director
8 December 2003
Resigned Th Group Services Limited as Corporate Secretary
8 December 2003
Resigned Laycock, Rufus as Director
18 November 2003
Appointed Swift Incorporations Limited as Corporate Nominee Secretary
18 November 2003
Resigned Swift Incorporations Limited as Corporate Nominee Secretary
18 November 2003
Appointed Th Group Services Limited as Corporate Secretary
18 November 2003
Appointed Laycock, Rufus as Director

Ownership 1 active

People and entities with significant control, from the Companies House PSC register

Corporate entity · Notified 12 June 2024
Owns 75–100% of shares
Holds 75–100% of voting rights
Right to appoint and remove directors
Private Limited Company
Reg. no. 15475788
Former controllers (2)
12 June 2024
Ceased Jacobs U.K. Limited — Owns 75–100% of shares
28 February 2019
Ceased Jacobs Process 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
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 This company 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 156

DateDescriptionMade Up ToPagesPDF
18 April 2026Full accounts27 September 2024
3 December 2025Compulsory strike-off action has been discontinued
2 December 2025First Gazette notice for compulsory strike-off
27 November 2025Confirmation statement with no updates18 November 2025
7 October 2025Appointment of a director
Show all 156 filings

Some other companies at this address

Amentum (UK) Ltd.
Amentum Clean Energy International Limited
Amentum Clean Energy Limited
Amentum Enterprise Asset Solutions Construction Limited
Amentum Enterprise Asset Solutions Limited
Amentum Facility Management UK Ltd.

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