CHRYSAOR NORTH SEA LIMITED
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Next accounts due
2026-09-30 (in 4mo)
Last filed for 2024-12-31
Confirmation statement due
2027-04-11 (in 11mo)
Last made up 2026-03-28
Watchouts
None on the register
Cash
£0
Latest balance sheet
Net assets
£176M
+1.4% vs 2023
Employees
0
Average over period
Profit before tax
£7M
-95% vs 2023
Net assets
2-year trend · vs Energy median
Accounts
2-year trend · latest reflected 2024-12-31
| Metric | Trend | 2023-12-31 | 2024-12-31 |
|---|---|---|---|
| Turnover | £30,677,000 | £60,553,000 | |
| Operating profit | £141,714,000 | £12,554,000 | |
| Profit before tax | £134,341,000 | £6,717,000 | |
| Net profit | £33,136,000 | £2,419,000 | |
| Cash | — | £0 | |
| Total assets less current liabilities | £321,986,000 | £332,996,000 | |
| Net assets | £173,742,000 | £176,161,000 | |
| Equity | £173,742,000 | £176,161,000 | |
| Average employees | 0 | 0 | |
| Wages | — | — | |
| Directors' remuneration | £0 | £0 |
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
Year-on-year
FY2023 → FY2024 · period ending 2024-12-31 vs 2023-12-31
-
Turnover
+97.4%
£30,677,000 £60,553,000
-
Cash
—
Not reported
-
Net assets
+1.4%
£173,742,000 £176,161,000
-
Employees
—
Not reported
-
Operating profit
-91.1%
£141,714,000 £12,554,000
-
Profit before tax
-95%
£134,341,000 £6,717,000
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
Ratios
Computed from the line items above — sparklines read oldest → newest
| Ratio | Trend | 2023-12-31 | 2024-12-31 |
|---|---|---|---|
| Operating margin | 462.0% | 20.7% | |
| Net margin | 108.0% | 4.0% | |
| Return on capital employed | 44.0% | 3.8% | |
| Gearing (liabilities / total assets) | 59.7% | 62.4% | |
| Current ratio | 3.31x | 2.87x | |
| Interest cover | 19.21x | 1.86x |
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.
Name history
Renamed 2 times since incorporation
- CHRYSAOR NORTH SEA LIMITED 2017-11-02 → present
- BG INTERNATIONAL (CNS) LIMITED 2001-01-04 → 2017-11-02
- HYDROCARBONS GREAT BRITAIN LIMITED 1969-07-24 → 2001-01-04
Audit & accounting basis
- Accounting basis
- FRS 101
- Reporting scope
- Standalone (parent only)
- Auditor
- Ernst & Young LLP
- Audit opinion
- Unqualified (clean)
- Going concern
- Affirmed
“The directors have adopted the going concern basis of accounting for the preparation of the financial statements as the Company's ultimate parent company, Harbour Energy plc, has undertaken to directly provide the necessary financial support to the Company, as and when required, to meet all liabilities for a period of 12 months from the date of signing these financial statements. In making their assessment of going concern, the directors have considered the letter of support from Harbour Energy plc and are confident that it has adequate resources to support the Company for 12 months from the date of signing these financial statements.”
Significant events
- “In September 2024, the North West Seymour infill well came on-stream.”
- “During the year, the Company took steps to unwind its exposure to cash-settled financial commodity derivatives, such that by the end of 2024 there are no amounts owed to group undertakings in relation to the back to back agreements with HEFL.”
Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers
People
4 active · 65 resigned
| Name | Role | Appointed | Born | Nationality |
|---|---|---|---|---|
| HARBOUR ENERGY SECRETARIES LIMITED | Corporate Secretary | 2022-10-10 | — | — |
| BARR, Scott | Director | 2024-12-12 | Jul 1976 | British |
| LANDES, Howard Ralph | Director | 2021-10-20 | Dec 1975 | British |
| SCOTT, Russell | Director | 2024-12-12 | Sep 1973 | British |
Show 65 resigned officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| BARRY, Chloe Silvana | Secretary | 2013-07-22 | 2016-07-31 |
| DUNN, Rebecca Louise | Secretary | 2010-09-23 | 2016-05-31 |
| ENNETT, Cayley Louise | Secretary | 2015-10-01 | 2016-07-31 |
| GRIFFIN, John Edward Henry | Secretary | 1995-06-30 | 2003-04-22 |
| GRIFFIN, John Edward Henry | Secretary | — | 1995-02-02 |
| HUGHES, Graham Paul | Secretary | 1995-02-02 | 1996-04-16 |
| INMAN, Carol Susan | Secretary | 2003-04-22 | 2013-07-22 |
| LANDES, Howard Ralph | Secretary | 2017-10-24 | 2022-10-10 |
| MARKHAM, Una | Secretary | 1996-10-03 | 2001-09-07 |
| MCCULLOCH, Alan William | Secretary | 2007-09-14 | 2012-04-27 |
| MOORE, Paul Anthony | Secretary | 2005-08-05 | 2007-09-14 |
| SADLER, John Michael | Secretary | — | 1995-06-30 |
| THOMAS, Luke | Secretary | 1998-08-25 | 1999-01-14 |
| SHELL CORPORATE SECRETARY LIMITED | Corporate Secretary | 2016-07-31 | 2017-10-24 |
| AFFLECK, Lewis Grant | Director | 2008-08-04 | 2010-07-12 |
| ALMANZA, Ashley Martin | Director | 2001-02-07 | 2002-09-09 |
| ASPDEN, Christopher Jonathan | Director | 2012-07-26 | 2014-07-04 |
| BEALL, Arthur Oren, Dr | Director | — | 1993-10-31 |
| BRAY, Ken, Dr | Director | — | 1993-08-03 |
| BROWN, Malcolm Archibald Halliday | Director | 2001-02-07 | 2002-09-01 |
| BURRARD-LUCAS, Stephen Charles | Director | 1996-04-16 | 1998-11-30 |
| CARNE, Mark Milford Power | Director | 2006-10-23 | 2009-11-10 |
| CHAPMAN, Frank Joseph | Director | 1996-11-26 | 2001-02-07 |
| COLLINGWOOD, Jonathan Mark | Director | 2011-12-12 | 2014-10-03 |
| COLLINS, Paul Anthony, Dr | Director | — | 1993-08-03 |
| COX, Christopher Martin | Director | 2006-09-08 | 2008-08-04 |
| DALTON, Howard William | Director | — | 1994-12-28 |
| DARLOW, Nigel Robert | Director | 2006-06-22 | 2006-09-08 |
| DEN HARTIGH, Ernst | Director | 2014-12-19 | 2016-08-31 |
| DOUGHTY, Donald Glenwood | Director | 1999-11-01 | 2000-08-31 |
| EIDE, Marianne Wold | Director | 2016-10-18 | 2017-10-24 |
| FRIEDLANDER, Colin David | Director | 1996-04-16 | 1997-06-02 |
| FRIEDRICH, William Michael | Director | 1999-01-01 | 2001-02-07 |
| GREGORY, Jack Lee | Director | — | 1994-01-31 |
| GRIFFIN, John Edward Henry | Director | 1995-06-30 | 1996-04-16 |
| GRIFFIN, John Edward Henry | Director | 1994-12-28 | 1995-02-02 |
| HADFIELD, John Paul Simeon | Director | 2014-10-03 | 2017-01-09 |
| HEWITT, Ian | Director | 2002-09-01 | 2006-06-22 |
| HOUSTON, Martin Joseph | Director | 1999-01-01 | 2001-02-07 |
| HUGHES, Graham Paul | Director | 1995-02-02 | 1996-04-16 |
| HUGHES, John David | Director | 2010-11-01 | 2012-01-05 |
| JUNGELS, Pierre Jean Marie Henri, Doctor | Director | 1996-04-16 | 1996-09-24 |
| KEMSHELL, David Michael | Director | 2016-02-16 | 2016-09-30 |
| KIRK, Philip Andrew | Director | 2017-10-24 | 2022-02-28 |
| KLAP, Frits Michiel Alexander | Director | 2016-10-18 | 2017-10-24 |
| KRANE, Alexander Lorentzen | Director | 2021-10-20 | 2024-12-12 |
| LOOKER, Garry | Director | 2002-09-09 | 2005-02-11 |
| MARTIN-DAVIS, Andrew | Director | 2015-03-02 | 2016-05-31 |
| MARTIN-DAVIS, Andrew | Director | 2005-02-11 | 2009-12-11 |
| MCMANUS, David | Director | 2000-05-23 | 2001-02-07 |
| MURPHY, Brian Peter | Director | — | 1994-03-18 |
| O'SHEA, Christopher Michael | Director | 2009-12-11 | 2010-11-01 |
| OSBORNE, Andrew Jon | Director | 2017-10-24 | 2021-10-26 |
| ROBERTS, David E | Director | 2005-02-11 | 2006-03-10 |
| SADLER, John Michael | Director | 1994-12-29 | 1995-06-30 |
| SAMUEL, Marcus Andrew | Director | 2012-10-04 | 2014-12-19 |
| SPROUSE, Rolynda Ann | Director | 2016-02-16 | 2016-10-31 |
| THORNLEY, Brian Ralph | Director | 1996-04-16 | 1999-11-01 |
| TRAFFORD, Edward Le Marchant | Director | 1999-01-01 | 2000-08-31 |
| TUCKER, Roger Morris, Dr | Director | 2009-12-11 | 2012-12-20 |
| VAN BUNNIK, Johannes Simon Maria | Director | 2017-03-01 | 2017-10-24 |
| WALSHE, Edward Thomas, Dr | Director | 1996-10-03 | 1999-11-01 |
| WEBB, Adrian Rawdon | Director | — | 1994-12-28 |
| WHYTE, Stephen James | Director | 2010-08-10 | 2011-11-07 |
| WORMLEY, Jon Clarke | Director | 1998-12-01 | 2004-12-30 |
Ownership
Persons with significant control
| Name | Kind | Nature of control | Notified | Status |
|---|---|---|---|---|
| Chrysaor E&P Limited | Corporate entity | Shares 75–100%, Voting 75–100%, Appoints directors | 2017-11-01 | Active |
| Bg International Limited | Corporate entity | Shares 75–100%, Voting 75–100%, right-to-appoint-and-remove-directors-as-firm | 2016-04-06 | Ceased 2017-10-31 |
Filing timeline
Last 20 of 308 total filings
| Date | Type | Category | Description | |
|---|---|---|---|---|
| 2026-04-30 | CH01 | officers | Change person director company with change date | |
| 2026-04-07 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-09-24 | AA | accounts | Accounts with accounts type full | |
| 2025-08-27 | PSC05 | persons-with-significant-control | Change to a person with significant control | |
| 2025-07-02 | CH04 | officers | Change corporate secretary company with change date | |
| 2025-03-28 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2025-03-27 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2024-12-20 | MR04 | mortgage | Mortgage satisfy charge full | |
| 2024-12-20 | MR04 | mortgage | Mortgage satisfy charge full | |
| 2024-12-16 | TM01 | officers | Termination director company with name termination date | |
| 2024-12-16 | AP01 | officers | Appoint person director company with name date | |
| 2024-12-16 | AP01 | officers | Appoint person director company with name date | |
| 2024-09-26 | AA | accounts | Accounts with accounts type full | |
| 2024-08-16 | AD01 | address | Change registered office address company with date old address new address | |
| 2024-03-22 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2023-10-12 | AA | accounts | Accounts with accounts type full | |
| 2023-05-23 | CH01 | officers | Change person director company with change date | |
| 2023-04-06 | CH01 | officers | Change person director company with change date | |
| 2023-03-20 | CS01 | confirmation-statement | Confirmation statement with no updates | |
| 2022-11-04 | PSC05 | persons-with-significant-control | Change to a person with significant control |
Public-record activity
Raw counts from Companies House — last 12–24 months
- Filings
- 5
- Capital events
- 0
- Officers appointed
- 0
- Officers resigned
- 0
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.