Updated 31 October 2026 · from filed accounts

The biggest energy companies in South West

National Oilwell Varco UK is the biggest company among the energy companies registered in South West by turnover, with £374m in its latest filed accounts. The Somerset Toiletry Company and Antech follow. Together the 10 companies below turned over £398m in their latest filed years.

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1
National Oilwell Varco UK
Stonehouse · Energy · FY to Dec 2024
£374m
-0.1% on the year before
2
The Somerset Toiletry Company
Clutton · Energy · FY to Dec 2025
£16.5m
+3.2% on the year before
3
Antech
Exeter · Energy · FY to Aug 2025
£6.66m
+3.9% on the year before
4
Inverter Fusion
Exmouth · Energy · FY to Jun 2025
£568k
-26% on the year before
5
Onsite Mechanical Engineers
Dawlish · Energy · FY to Nov 2025
£30.6k
-7.3% on the year before
6
Acquire Offshore Marine Services
Bournemouth · Energy · FY to Jun 2025
£26.7k
-38% on the year before
7
Stormfree Holdings
Westbury · Energy · FY to Jul 2025
£25.7k
+17% on the year before
8
Ironstache Elixirs
Wimborne · Energy · FY to Jun 2025
£4.13k
-52% on the year before
9
Naturally Bycipi
Stroud · Energy · FY to Jun 2025
£1.01k
-25% on the year before
10
Belief Botanicals
Poole · Energy · FY to Apr 2025
£35
-96% 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.

How this list is made

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