opendata.bot
Company number
03260477

AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED

Officer · PRENTICE, Joshua David and 31 others
Active
✓ Active company on the official register. Next accounts due 30 September 2026.

Company details

Registered name
AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED
Company number
03260477
Registered office
305 Bridgewater Place, Birchwood Park, Warrington, WA3 6XF, United Kingdom
Company type
Private limited company
Incorporated on
8 October 1996
Status
Active
Age
29 years
Previous names
JACOBS CLEAN ENERGY INTERNATIONAL LIMITED (to 30 Sept 2024) · AMEC FOSTER WHEELER NUCLEAR INTERNATIONAL LIMITED (to 18 Mar 2020) · AMEC NUCLEAR INTERNATIONAL LIMITED (to 16 Dec 2014) · NNC LIMITED (to 24 Sept 2008) · TECHNICA LIMITED (to 18 Aug 2005) · UNITED DECOMMISSIONING TECHNOLOGIES LIMITED (to 16 Apr 2003) · LEADERS IN BUSINESS LIMITED (to 18 Nov 1996)
Nature of business (SIC)
71122 — Engineering related scientific and technical consulting activities · 71200 — Technical testing and analysis
Accounts — next due
30 Sept 2026
Accounts — last made up to
27 Sept 2024
Confirmation statement — next due
22 Oct 2026
Confirmation statement — last
08 Oct 2025

What the register says

Facts from the register, with the dates they are filed under. Not a score: what they mean is for you to judge, and every line can be checked against Companies House itself.

Companies House register snapshot, read 02/09/2026.

Officers

3 active · 29 resigned

secretary
Appointed 01/06/2024
Active
director
Appointed 01/10/2025
Active
director
Appointed 14/04/2026
Active

People with significant control

Beneficial owners holding over 25% of shares, voting rights or the right to appoint directors

Amentum Clean Energy Limited
ownership-of-shares-75-to-100-percent, voting-rights-75-to-100-percent, right-to-appoint-and-remove-directors
Notified 06/04/2016

Corporate structure

Who controls this company, and who they control in turn

Connections

Serving officers

secretary Appointed 01/06/2024
director Appointed 01/10/2025
director Appointed 14/04/2026

Change history

Reconstructed from the dated records Companies House publishes

DateChangeWasNow
15/04/2026 Director resigned LYONS, Ellen
14/04/2026 Director appointed SHAW, Martin Warwick
13/04/2026 Director resigned CARTER, Roy Barrie
01/10/2025 Director appointed JONES, Loren Michael
30/09/2025 Director resigned WHITE, Andrew John
30/09/2024 Registered name changed JACOBS CLEAN ENERGY INTERNATIONAL LIMITED AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED
01/06/2024 Secretary resigned ROBERTS, Geoffrey
01/06/2024 Secretary appointed PRENTICE, Joshua David
21/08/2023 Secretary resigned HOLMAN, Rhona Mary
21/08/2023 Secretary appointed ROBERTS, Geoffrey
10/02/2023 Secretary resigned CHAUDHARY, Tejender Singh, Mr
10/02/2023 Secretary appointed HOLMAN, Rhona Mary
09/12/2020 Director resigned EDWARDS, Sion Erwyd
30/11/2020 Director appointed CARTER, Roy Barrie
26/06/2020 Secretary appointed CHAUDHARY, Tejender Singh, Mr
18/03/2020 Registered name changed AMEC FOSTER WHEELER NUCLEAR INTERNATIONAL LIMITED JACOBS CLEAN ENERGY INTERNATIONAL LIMITED
06/03/2020 Secretary resigned JONES, Iain Angus
12/08/2019 Director appointed EDWARDS, Sion Erwyd
25/07/2019 Director resigned WOOD, Paul David
02/05/2019 Secretary appointed JONES, Iain Angus

Financial highlights

No figures could be read from the accounts filed on 03 Apr 2026. Companies House holds some filings only as a document image, which carries no tagged figures; the filing itself is on the register either way.

Documents for AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED

Need this one company on file? Buy the document on its own — no plan required.

Company extract£1.99

The full registration record as held today — name, number, status, registered office, company type, previous names, officers, PSC and SIC codes, timestamped for your file.

PDF Order
Financial statements£3.99

Every figure the company’s own accounts state, across each filed period, with year-on-year movement. Most UK companies file small or micro-entity accounts — a balance sheet and a headcount, no turnover or profit.

PDF + CSV Order
Ownership report£3.99

Who controls the company: persons with significant control, the nature of that control, the ownership graph and every other company those controllers hold.

PDF Order

Filing history

Most recent filings

TM01 — termination-director-company-with-name-termination-date
officers
AP01 — appoint-person-director-company-with-name-date
officers
TM01 — termination-director-company-with-name-termination-date
officers
AA — accounts-with-accounts-type-full
accounts
CH01 — change-person-director-company-with-change-date
officers
CS01 — confirmation-statement-with-no-updates
confirmation-statement
AP01 — appoint-person-director-company-with-name-date
officers
TM01 — termination-director-company-with-name-termination-date
officers
AD01 — change-registered-office-address-company-with-date-old-address-new-address
address
AD01 — change-registered-office-address-company-with-date-old-address-new-address
address
CS01 — confirmation-statement-with-updates
confirmation-statement
PSC05 — change-to-a-person-with-significant-control
persons-with-significant-control
CERTNM — certificate-change-of-name-company
change-of-name
AD01 — change-registered-office-address-company-with-date-old-address-new-address
address
AA — accounts-with-accounts-type-full
accounts
TM02 — termination-secretary-company-with-name-termination-date
officers
AP03 — appoint-person-secretary-company-with-name-date
officers
CS01 — confirmation-statement-with-no-updates
confirmation-statement
AP03 — appoint-person-secretary-company-with-name-date
officers
TM02 — termination-secretary-company-with-name-termination-date
officers
AA — accounts-with-accounts-type-full
accounts
AP03 — appoint-person-secretary-company-with-name-date
officers
TM02 — termination-secretary-company-with-name-termination-date
officers
CS01 — confirmation-statement-with-no-updates
confirmation-statement
AA — accounts-with-accounts-type-full
accounts

Data protection register

No entry found on the ICO register of fee payers under this name.

Not every organisation has to register — some are exempt. An absent entry is a question to ask, not a finding.

Get this company via API

Every field on this page is available as structured JSON behind one endpoint and one API key.

GET /v1/company/gb/03260477
X-Api-Key: $OPENDATA_KEY
Read the API docs

Frequently asked questions

What is the company number of AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED?
According to the official registry, the company number of AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED is 03260477.
Where is AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED registered?
The registered office is 305 Bridgewater Place, Birchwood Park, Warrington, WA3 6XF, United Kingdom.
Who runs AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED?
PRENTICE, Joshua David is listed among the officers of AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED.
What is the SIC code of AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED?
The nature of business is recorded under SIC code 71122 — Engineering related scientific and technical consulting activities, 71200 — Technical testing and analysis.
Who controls AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED?
Amentum Clean Energy Limited is recorded as a person with significant control, with ownership of shares 75 to 100 percent, voting rights 75 to 100 percent, right to appoint and remove directors.
When are the next accounts of AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED due?
The next annual accounts are due by 30 September 2026, and the last accounts were made up to 27 September 2024.

About AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED (03260477)

AMENTUM CLEAN ENERGY INTERNATIONAL LIMITED is a private limited company incorporated on 8 October 1996 and registered in the United Kingdom under company number 03260477. Its registered office is at 305 Bridgewater Place, Birchwood Park, Warrington, WA3 6XF, United Kingdom. The recorded nature of business is engineering related scientific and technical consulting activities (SIC 71122). The company is currently active , with statutory accounts last made up to 27 September 2024. 32 active officers are on record , and the person with significant control is Amentum Clean Energy Limited. This profile is provided by opendata.bot by Noetikos, aggregating official data from Companies House , last refreshed 6 September 2026.

Companies at the same registered office

Engineering related scientific and technical consulting activities across UK registers

The same sector and the same company, seen through every register we hold

Explore by sector

Every UK company records what it does as a SIC code — browse the sectors around this one.