# The 10 biggest companies in Wales

The companies registered in Wales with the highest turnover in their latest filed accounts, ranked, with profit and growth.

Iceland is the biggest company registered in Wales by turnover, with £4.2bn in its latest filed accounts. Redrow and MONY Group follow. Together the 10 companies below turned over £8.28bn in their latest filed years.

| Rank | Company | Town | Turnover | Year |
| ---: | --- | --- | ---: | --- |
| 1 | [Iceland](https://firmfacts.co/company/iceland) | Deeside | £4.2bn | FY to Mar 2025 |
| 2 | [Redrow](https://firmfacts.co/company/redrow-02877315) | Flintshire | £2.13bn | FY to Jul 2023 |
| 3 | [MONY Group](https://firmfacts.co/company/mony-group-06160943) | Ewloe | £446m | FY to Dec 2025 |
| 4 | [Sinclair Garages (Swansea)](https://firmfacts.co/company/sinclair-garages-swansea-06141261) | Bridgend | £277m | FY to Dec 2025 |
| 5 | [Advance Contracting Solutions](https://firmfacts.co/company/advance-contracting-solutions-07134728) | Ewloe | £253m | FY to Mar 2025 |
| 6 | [Sinclair Garages](https://firmfacts.co/company/sinclair-garages-01342890) | Bridgend | £248m | FY to Dec 2025 |
| 7 | [Jones Bros. Ruthin (Civil Engineering) Co](https://firmfacts.co/company/jones-bros-ruthin-civil-engineering-co-00983459) | Ruthin | £233m | FY to Mar 2026 |
| 8 | [Ralawise](https://firmfacts.co/company/ralawise-01362849) | Deeside | £171m | FY to Dec 2025 |
| 9 | [Boots Hearingcare](https://firmfacts.co/company/boots-hearingcare-00823009) | Llandudno | £170m | FY to Mar 2026 |
| 10 | [JTG Holdings](https://firmfacts.co/company/jtg-holdings-07098738) | Kidwelly | £154m | FY to Dec 2025 |

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Updated 2026-10-26 from the latest filed accounts at Companies House (Open Government Licence v3.0). Page: https://firmfacts.co/blog/biggest-companies-in-wales