Biggest companies in Wales 2026
- Companies
- 1,255
- Total revenue
- £50.70bn
- Total jobs
- 241,754
Biggest companies in Wales by revenue 2026
Top filers by latest reported turnover
| # | Company | Revenue | Employees |
|---|---|---|---|
| 01 | GE AIRCRAFT ENGINE SERVICES LIMITED Aircraft engine manufacturer and servicer | £1.40bn | 1,665 |
| 02 | THE ROYAL MINT LIMITED State-owned coin and bullion manufacturer | £1.32bn | 752 |
| 03 | HUWS GRAY LIMITED | £1.31bn | 4,570 |
| 04 | GLAS CYMRU HOLDINGS CYFYNGEDIG group accounts Holding company for Welsh Water | £1.17bn | 4,056 |
| 05 | TRANSPORT FOR WALES Welsh public transport authority | £876M | — |
| 06 | SINCLAIR MOTOR HOLDINGS LIMITED group accounts | £704M | 882 |
| 07 | IPSEN BIOPHARM LIMITED Biopharmaceutical manufacturing subsidiary | £661M | 713 |
| 08 | BRCK GROUP PLC group accounts | £637M | 821 |
| 09 | WALES & WEST UTILITIES LIMITED | £594M | 1,950 |
| 10 | 7 STEEL (UK) HOLDINGS LIMITED group accounts Holding company for steel manufacturer | £533M | 1,591 |
| 11 | MARELLI AUTOMOTIVE SYSTEMS UK LIMITED KKR-backed automotive parts manufacturer | £529M | 1,257 |
| 12 | UK FRISBEE DEBTCO LIMITED group accounts | £445M | 3,278 |
Biggest employers in Wales
Top filers by latest reported headcount
| # | Company | Employees |
|---|---|---|
| 01 | ADMIRAL GROUP PLC group accounts | 14,998 |
| 02 | EUI LIMITED | 11,773 |
| 03 | HUWS GRAY LIMITED | 4,570 |
| 04 | DWR CYMRU CYFYNGEDIG Regulated water and wastewater utility | 4,056 |
| 05 | SHAW HEALTHCARE (GROUP) LIMITED group accounts Employee-owned care home operator | 3,314 |
| 06 | UK FRISBEE DEBTCO LIMITED group accounts | 3,278 |
| 07 | SLH SWANSEA LIMITED | 3,135 |
| 08 | TWENTY FOUR SEVEN RECRUITMENT SERVICES LIMITED | 2,930 |
| 09 | HBL (HOLDINGS) LIMITED group accounts | 2,451 |
| 10 | OSCAR MAYER LIMITED Prepared meal manufacturer | 2,294 |
| 11 | APOLLO TEACHING SERVICES LTD | 2,166 |
| 12 | WALES & WEST UTILITIES LIMITED | 1,950 |
Most profitable companies in Wales 2026
Top operating filers by latest pre-tax profit
| # | Company | Pre-tax profit | Employees |
|---|---|---|---|
| 01 | ADMIRAL GROUP PLC group accounts | £955M | 14,998 |
| 02 | EUI LIMITED | £703M | 11,773 |
| 03 | IPSEN BIOPHARM LIMITED Biopharmaceutical manufacturing subsidiary | £253M | 713 |
| 04 | KLA CORPORATION UK LIMITED Semiconductor equipment manufacturing subsidiary | £139M | 612 |
| 05 | FIRST HYDRO COMPANY Pumped storage electricity generator | £132M | 180 |
| 06 | GE AIRCRAFT ENGINE SERVICES LIMITED Aircraft engine manufacturer and servicer | £127M | 1,665 |
| 07 | SOUTH HOOK LNG TERMINAL COMPANY LTD. Liquefied natural gas terminal operator | £125M | 103 |
| 08 | WALES & WEST UTILITIES LIMITED | £91M | 1,950 |
| 09 | SOFIDEL UK LIMITED Tissue paper manufacturer | £79M | 881 |
| 10 | CREDITSAFE UK HOLDING LIMITED | £60M | 26 |
| 11 | ORTHO-CLINICAL DIAGNOSTICS In vitro diagnostics manufacturer | £41M | 643 |
| 12 | CREDITSAFE SERVICES LIMITED | £40M | 293 |
Best-paid boards in Wales
Highest directors' remuneration disclosed
| # | Company | Directors' pay | Employees |
|---|---|---|---|
| 01 | ADMIRAL GROUP PLC group accounts | £8M | 14,998 |
| 02 | IRVINGQ LIMITED | £4M | 261 |
| 03 | C.WYNNE & SONS LIMITED | £3M | 66 |
| 04 | WATKIN JONES & SON LIMITED | £3M | 284 |
| 05 | ANDREW SCOTT LTD. | £2M | 242 |
| 06 | MRA UK INVESTMENTS LIMITED | £2M | 1,052 |
| 07 | BRCK GROUP PLC group accounts | £2M | 821 |
| 08 | CHETWOOD FINANCIAL LIMITED Digital retail bank and lender | £2M | 332 |
| 09 | DWR CYMRU CYFYNGEDIG Regulated water and wastewater utility | £2M | 4,056 |
| 10 | WREXHAM AFC LIMITED Welsh professional football club | £2M | 313 |
| 11 | THE TRADE CENTRE GROUP PLC group accounts | £2M | 638 |
| 12 | CASTLE LEISURE LTD | £2M | 550 |
Directors' remuneration as disclosed in filed accounts. Group filings may report key-management-personnel compensation, which is broader than the board; LLP members' profit share is excluded. Treat as "highest disclosed", not a like-for-like board ranking.
Filed accounts in October 2026 · Wales
223 of the companies we profile in Wales filed a new set of accounts in the month to 1 Oct 2026 — the biggest by turnover. Whole register →
| # | Company | Turnover | YoY | Employees | Year to |
|---|---|---|---|---|---|
| 01 | HUWS GRAY LIMITED Consumer Discretionary · Llangefni | £1.3bn | -2% | 4,570 | 31 Dec 2025 |
| 02 | GLAS CYMRU HOLDINGS CYFYNGEDIG Utilities · Cardiff | £1.2bn | +28% | 4,056 | 31 Mar 2026 |
| 03 | DWR CYMRU CYFYNGEDIG Utilities · Cardiff | £1.2bn | +28% | 4,056 | 31 Mar 2026 |
| 04 | GLAS CYMRU ANGHYFYNGEDIG Utilities · Cardiff | £1.2bn | +28% | — | 31 Mar 2026 |
| 05 | BRCK GROUP PLC Industrials · Bridgend | £637.1m | +7% | 821 | 31 Mar 2026 |
| 06 | ORTHO-CLINICAL DIAGNOSTICS Health Care · Bridgend | £307.1m | -3% | 643 | 28 Dec 2025 |
| 07 | WEPA UK LTD Basic Materials · Maesteg | £202.0m | -11% | 388 | 31 Dec 2025 |
| 08 | INSPOP.COM LIMITED Technology · Cardiff | £172.6m | +16% | 242 | 31 Dec 2025 |
| 09 | CYTEC ENGINEERED MATERIALS LIMITED Consumer Discretionary · Wrexham | £171.7m | +3% | 541 | 31 Dec 2025 |
| 10 | EUROCLAD GROUP LIMITED Industrials · Cardiff | £140.4m | -20% | 324 | 31 Dec 2025 |
Companies ranked from their latest filed accounts at registered offices in Wales. Registered office is where a company files, which is not always where it trades — see the badges. Implausible outliers are excluded. Snapshot from Companies House.