Updated 1 November 2026 · from filed accounts
The biggest energy companies in Scotland
Sentinel Offshore Vessels is the biggest company among the energy companies registered in Scotland by turnover, with £40.4m in its latest filed accounts. Interwell and First Marine Solutions follow. Together the 10 companies below turned over £192m in their latest filed years.
- 1Sentinel Offshore Vessels
Aberdeen · Energy · FY to Dec 2025
£40.4m
+5.9% on the year before
- 2Interwell
Aberdeen · Energy · FY to Dec 2025
£27.2m
-19% on the year before
- 3
First Marine SolutionsAberdeen · Energy · FY to Apr 2025
£21.6m
-0.9% on the year before
- 4Nucore Group
Aberdeen · Energy · FY to May 2025
£17.7m
+2.8% on the year before
- 5Imenco UK
Aberdeen · Energy · FY to Dec 2024
£17.3m
+17% on the year before
- 6
Rotech SubseaAberdeen · Energy · FY to Dec 2024
£17.2m
+62% on the year before
- 7Cyan Subsea UK
Aberdeen · Energy · FY to Dec 2025
£13.9m
-24% on the year before
- 8Geoactive
Aberdeen · Energy · FY to Dec 2025
£13m
-2.1% on the year before
- 9HCS Aberdeen
Glenrothes · Energy · FY to Dec 2025
£12m
+0.5% on the year before
- 10Brimmond
Inverurie · Energy · FY to Mar 2025
£11.6m
+1.8% 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.