Updated 24 October 2026 · from filed accounts
The 10 biggest energy companies in the UK
National Oilwell Varco UK is the biggest company among the UK's energy companies by turnover, with £374m in its latest filed accounts. Stelrad Group and Sarval follow. Together the 10 companies below turned over £1.06bn in their latest filed years.
- 1National Oilwell Varco UK
Stonehouse · Energy · FY to Dec 2024
£374m
-0.1% on the year before
- 2Stelrad Group
Newcastle Upon Tyne · Energy · FY to Dec 2025
£280m
-3.8% on the year before
- 3Sarval
Doncaster · Energy · FY to Dec 2025
£62.9m
+9.8% on the year before
- 4Brocklesby
North Cave · Energy · FY to Dec 2025
£59.6m
+29% on the year before
- 5Ode Asset Management
Great Yarmouth · Energy · FY to Dec 2025
£54.4m
+11% on the year before
- 6Potter & Moore
Peterborough · Energy · FY to Mar 2024
£53.2m
-9.2% on the year before
- 7Pierre Fabre
London · Energy · FY to Dec 2025
£52.5m
+22% on the year before
- 8Festo
Northampton · Energy · FY to Dec 2023
£45.8m
+0.8% on the year before
- 9Remy Cointreau UK Distribution
London · Energy · FY to Mar 2024
£42.2m
+0.6% on the year before
- 10Sentinel Offshore Vessels
Aberdeen · Energy · FY to Dec 2025
£40.4m
+5.9% on the year before
How this list is made
From each company's latest accounts filed at Companies House, or its annual report for listed groups: the figures as filed, nothing estimated. Changes compare the two latest filed years. Only companies that report in pounds are ranked; groups that report in dollars or euros aren't converted. Subsidiaries whose figures are part of a listed group's are counted once, in the group. Updated daily as new accounts are filed.