CNOOC UK LIMITED

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

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.

Accounting basis

FRS 101

Reporting scope

Standalone (parent only)

Auditor

Ernst & Young LLP

Audit opinion

Unqualified (clean)

Going concern

Affirmed

“The directors have a reasonable expectation that the Company has adequate resources to continue in operational existence for a period to 30 September 2026. The assessment included forecasting cash flows under a base-case scenario, and an extreme-worst case scenario.”

Group structure

1. CNOOC UK LIMITED · parent
   1. CNOOC Petroleum Europe Limited 100% · England and Wales
   2. Nexen Petroleum U.K. Holdings Limited 100% · England and Wales
   3. CNOOC Energy Holdings U.S.A. Inc. 100% · Delaware
   4. CNOOC West Africa Petroleum E & P, S.A. 100% · Senegal
   5. CNOOC Petroleum Colombia Limited 100% · Jersey
   6. CNOOC Petroleum Mauritania Limited 100% · England and Wales
   7. CNOOC Energy U.S.A. LLC 100% · Delaware
   8. CNOOC Petroleum Offshore U.S.A. Inc. 100% · Delaware
   9. CNOOC Petroleum Farragon U.K. Limited 100% · England and Wales
   10. CNOOC Ettrick U.K. Limited 100% · England and Wales
   11. CNOOC Marketing U.S.A. Inc. 100% · Delaware
   12. CNOOC Holdings U.S.A. Inc. 100% · Delaware
   13. CNOOC Finance (2015) U.S.A. LLC 100% · Delaware
   14. Nexen Energy Capital Management U.S.A. Inc. 100% · Delaware
   15. CNOOC Petroleum Sales U.S.A. Inc. 100% · Texas
   16. CanadianOxy Offshore Production Co. 100% · Delaware
   17. Mattos Pipeline Company LLC 21% · Delaware
   18. CNOOC Petroleum U.S.A Inc. 100% · Delaware

Significant events

• “In May 2025. the loan facility with parent CNOOC International Limited was reduced from US $1.500 million to US $1.000 million and extended to 31 December 2030.”
• “In May 2025. the loan facility with subsidiary CNOOC Energy Holdings USA Inc. was reduced from US $900 million to US $400 million.”
• “In April 2025, the loan facility with subsidiary CNOOC Petroleum Mauritania Limited for US $100 million, was terminated.”
• “The wholly owned subsidiary CNOOC Petroleum Mauritania Limited entered liquidation in May 2025 (see note 10).”
• “The wholly owned subsidiary CNOOC West Africa Petroleum E & P, S.A. was dissolved both in May 2025 (see note 10).”

Auditor, going-concern and subsidiary information is drawn from the narrative of the latest annual accounts. About these numbers

Filings

5

last 12 months

Capital events

0

last 24 months

Officers appointed

1

last 12 months

Officers resigned

1

last 12 months

Direct counts from the register. No score, no rating — see the Filing timeline for the underlying events.

• Turnover

  -50%

  £148,257,969 → £74,128,984

• Cash

  -13%

  £262,416,605 → £228,317,272

• Net assets

  -72.9%

  £1,526,315,789 → £414,381,023

• Employees

  —

  Not reported

• Operating profit

  +4.8%

  -£1,164,566,345 → -£1,108,228,317

• Profit before tax

  +4.8%

  -£1,164,566,345 → -£1,108,228,317

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