AMENTUM E&C LIMITED
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Next accounts due
2026-06-30 (in 1mo)
Last filed for 2024-09-27
Confirmation statement due
2026-12-02 (in 7mo)
Last made up 2025-11-18
Watchouts
Cash
—
Latest balance sheet
Net assets
—
Equity attributable
Employees
—
Average over period
Profit before tax
£4M
+53,542.9% vs 2023
Watchouts
Facts from the Companies House register and the latest accounts — not a rating
-
1 PSC ceased in last 24 months
Significant control changed hands — see the Ownership section.
Name history
Renamed 3 times since incorporation — the current trading name was adopted 2024-09-30
- AMENTUM E&C LIMITED 2024-09-30 → present
- JACOBS E&C LIMITED 2011-03-01 → 2024-09-30
- AKER SOLUTIONS E&C LTD 2008-04-03 → 2011-03-01
- AKER KVAERNER ENGINEERING SERVICES LIMITED 2003-11-18 → 2008-04-03
Profit before tax
2-year trend · vs Industrials median
Accounts
2-year trend · latest reflected 2024-09-27
| Metric | Trend | 2023-09-29 | 2024-09-27 |
|---|---|---|---|
| Turnover | £13,803,000 | £16,726,000 | |
| Operating profit | £8,000 | £3,755,000 | |
| Profit before tax | £7,000 | £3,755,000 | |
| Net profit | £5,000 | £2,817,000 | |
| Cash | — | — | |
| Total assets less current liabilities | — | — | |
| Net assets | — | — | |
| Equity | — | — | |
| Average employees | — | — | |
| Wages | — | — |
Values shown as filed in the company's annual accounts. — indicates the figure wasn't present under that line item in that period. About these numbers
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2023-09-29 | 2024-09-27 |
|---|---|---|---|
| Operating margin | 0.1% | 22.5% | |
| Net margin | 0.0% | 16.8% |
Margins divide P&L lines by turnover. Gearing is liabilities over total assets. Current ratio is current assets over creditors falling due within one year. Interest cover is operating profit over absolute finance costs. Sector-distribution context coming next.
Audit & accounting basis
- Accounting basis
- FRS 101
- Reporting scope
- Standalone (parent only)
- Auditor
- Ernst & Young LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“If the Company requires assistance to meet its financial obligations, Amentum Holdings LLC would be able to provide support to the Company. The Directors have received a letter of support from Amentum Holdings LLC, confirming it will be able to provide support to the Company, if needed, until 30 April 2027 in order to allow the Company to operate as a going concern.”
Significant events
- “On 30 September 2024, the Company changed its name from Jacobs E&C Limited to Amentum E&C Limited.”
- “Jacobs Group successfully completed a strategic restructuring this year, involving the spin-off and merger of its Critical Mission Solutions (CMS) and Cyber & Intelligence government services businesses with Amentum. This resulted in the creation of a new independent, publicly traded company.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
3 active · 32 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| PRENTICE, Joshua David | Secretary | 2024-06-01 | — | — |
| JONES, Loren Michael | Director | 2025-10-01 | Mar 1984 | British |
| SHAW, Martin Warwick | Director | 2025-05-12 | Sep 1967 | British |
Show 32 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| CHAUDHARY, Tejender | Secretary | 2018-06-01 | 2023-02-10 |
| CONNELL, David Richard | Secretary | 2003-12-08 | 2004-08-31 |
| FERNIE, John William David | Secretary | 2004-12-01 | 2011-12-20 |
| GAMBLE, Nigel William | Secretary | 2004-09-13 | 2004-12-01 |
| HOLMAN, Rhona Mary | Secretary | 2023-02-10 | 2023-08-21 |
| NORRIS, Michael Timothy | Secretary | 2011-12-20 | 2018-06-01 |
| ROBERTS, Geoffrey | Secretary | 2023-08-21 | 2024-06-01 |
| SWIFT INCORPORATIONS LIMITED | Corporate Nominee Secretary | 2003-11-18 | 2003-11-18 |
| TH GROUP SERVICES LIMITED | Corporate Secretary | 2003-11-18 | 2003-12-08 |
| CNOSSEN, Johan Piet | Director | 2010-02-11 | 2011-09-22 |
| DOYLE, John Conor | Director | 2013-10-18 | 2016-10-07 |
| ELLIS, David | Director | 2019-06-03 | 2020-12-09 |
| FLEETWOOD, Michael William | Director | 2011-09-22 | 2014-09-25 |
| GORDON, Douglas Alexander | Director | 2008-09-12 | 2011-09-22 |
| IRVIN, Robert Anthony Michael, Dr | Director | 2011-09-22 | 2013-10-18 |
| LAYCOCK, Rufus | Director | 2003-11-18 | 2003-12-08 |
| LEGGETT, Mark Richard | Director | 2004-09-13 | 2006-02-17 |
| LEY, David Robert | Director | 2006-02-17 | 2010-05-31 |
| LINSEISEN, Anita | Director | 2021-12-01 | 2024-10-21 |
| MCWILLIAMS, Edward | Director | 2006-06-28 | 2009-12-02 |
| MILES, Sally Linda Joyce | Director | 2019-06-03 | 2021-12-01 |
| OLIVER, Malcolm William | Director | 2003-12-08 | 2004-09-13 |
| POWER, Leon Anthony | Director | 2014-10-20 | 2016-12-05 |
| SEATON, Paul | Director | 2016-11-02 | 2019-04-26 |
| SHATTOCK, Jonathan R. | Director | 2018-06-29 | 2020-11-30 |
| SIVERSTEN, Ole Kristian | Director | 2003-12-08 | 2005-09-30 |
| TAUTRA, Jarle | Director | 2003-12-08 | 2008-08-13 |
| TAY, Nigel Rory George | Director | 2004-09-28 | 2005-05-27 |
| WHITE, Andrew John | Director | 2020-11-30 | 2025-09-30 |
| WHITE, Clive Thomas | Director | 2020-11-30 | 2021-08-16 |
| WIEMELT, Karen | Director | 2021-08-16 | 2024-01-12 |
| WOODS, Ronald Ernest | Director | 2003-12-08 | 2003-12-08 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Energy, Security And Technology Uk Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2024-06-12 | Active |
| Jacobs U.K. Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2019-02-28 | Ceased 2024-06-12 |
| Jacobs Process Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2016-04-06 | Ceased 2019-02-28 |
Filing timeline
Last 20 of 156 total filings
Material constitutional events — rename, articles re-file, resolution
- 2024-09-30 CERTNM Certificate change of name company PDF
- 2024-03-08 RESOLUTIONS Resolution
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-04-18 | AA | accounts | Accounts with accounts type full | |
| 2025-12-03 | DISS40 | gazette | Gazette filings brought up to date | |
| 2025-12-02 | GAZ1 | gazette | Gazette notice compulsory | |
| 2025-11-27 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-10-07 | AP01 | officers | Appoint person director company with name date | |
| 2025-09-30 | TM01 | officers | Termination director company with name termination date | |
| 2025-05-14 | AP01 | officers | Appoint person director company with name date | |
| 2024-11-28 | CS01 | confirmation-statement | Confirmation statement with updates | |
| 2024-11-11 | AD01 | address | Change registered office address company with date old address new address | |
| 2024-10-21 | TM01 | officers | Termination director company with name termination date | |
| 2024-09-30 | PSC05 | persons-with-significant-control | Change to a person with significant control | |
| 2024-09-30 | CERTNM | change-of-name | Certificate change of name company | |
| 2024-09-23 | AD01 | address | Change registered office address company with date old address new address | |
| 2024-07-08 | AA | accounts | Accounts with accounts type full | |
| 2024-07-02 | PSC02 | persons-with-significant-control | Notification of a person with significant control | |
| 2024-07-02 | PSC07 | persons-with-significant-control | Cessation of a person with significant control | |
| 2024-06-05 | TM02 | officers | Termination secretary company with name termination date | |
| 2024-06-03 | AP03 | officers | Appoint person secretary company with name date | |
| 2024-03-08 | SH19 | capital | Capital statement capital company with date currency figure | |
| 2024-03-08 | RESOLUTIONS | resolution | Resolution |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 7
- Capital events
- 0
- Officers appointed
- 2
- Officers resigned
- 1
last 12 months
last 24 months
last 12 months
last 12 months
Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.
Year-on-year
FY2023 → FY2024 · period ending 2024-09-27 vs 2023-09-29
-
Turnover
+21.2%
£13,803,000 £16,726,000
-
Cash
—
Not reported
-
Net assets
—
Not reported
-
Employees
—
Not reported
-
Operating profit
+46,837.5%
£8,000 £3,755,000
-
Profit before tax
+53,542.9%
£7,000 £3,755,000
Each % is (latest − prior) ÷ |prior| for the line item as filed. The comparison is only shown when the latest and prior accounts cover broadly equal-length periods — short or long stubs (typical around incorporation or a year-end change) are suppressed rather than misrepresented. Lines a company doesn't report are omitted. About these numbers