Biggest companies in Windsor 2026
- Companies
- 114
- Total revenue
- £13.77bn
- Total jobs
- 14,090
BRITISH GAS LIMITED alone accounts for ~40% of the revenue reported here — a single group's national accounts booked to its registered office.
Biggest companies in Windsor by revenue 2026
Top filers by latest reported turnover
| # | Company | Revenue | Employees |
|---|---|---|---|
| 01 | BRITISH GAS LIMITED registered office Energy trading subsidiary of Centrica | £5.49bn | — |
| 02 | ITW UK FINANCE BETA LIMITED | £1.90bn | 0 |
| 03 | CENTRICA ENERGY MARKETING LIMITED registered office Wholesale energy trading subsidiary | £1.74bn | — |
| 04 | ITW LIMITED Diversified industrial manufacturing subsidiary | £744M | 1,895 |
| 05 | CENTRICA LNG UK LIMITED registered office LNG operations subsidiary | £385M | 0 |
| 06 | SPIRIT ENERGY NORTH SEA LIMITED registered office Oil and gas extraction subsidiary | £360M | — |
| 07 | IHG HOTELS LIMITED Hotel franchisor and management subsidiary | £293M | 484 |
| 08 | NETAPP UK LTD Data storage and management subsidiary | £165M | 278 |
| 09 | SIX CONTINENTS LIMITED InterContinental Hotels Group subsidiary | £159M | 399 |
| 10 | SEKO LOGISTICS GROUP LIMITED group accounts Logistics and supply chain group | £158M | 376 |
| 11 | AREA SQ. LIMITED Specialised construction services provider | £120M | 157 |
| 12 | NEAS ENERGY LIMITED registered office Energy trading and distribution subsidiary | £112M | — |
Biggest employers in Windsor
Top filers by latest reported headcount
| # | Company | Employees |
|---|---|---|
| 01 | ITW LIMITED Diversified industrial manufacturing subsidiary | 1,895 |
| 02 | SALUTEM LD TOPCO LIMITED group accounts Specialist care group holding company | 1,520 |
| 03 | PORTHAVEN CARE HOMES NO 2 LIMITED Care home operator subsidiary | 702 |
| 04 | IHG HOTELS LIMITED Hotel franchisor and management subsidiary | 484 |
| 05 | BRITISH GAS SOCIAL HOUSING LIMITED registered office Social housing heating installation provider | 472 |
| 06 | SPIRIT ENERGY PRODUCTION UK LIMITED registered office Oil and gas production subsidiary | 434 |
| 07 | SIX CONTINENTS LIMITED InterContinental Hotels Group subsidiary | 399 |
| 08 | NEILSON FINANCIAL SERVICES LIMITED Direct-to-consumer life insurance provider | 387 |
| 09 | SEKO LOGISTICS GROUP LIMITED group accounts Logistics and supply chain group | 376 |
| 10 | WINDSOR LEARNING PARTNERSHIP Multi-academy trust | 375 |
| 11 | SURFACE TECHNOLOGY INTERNATIONAL LIMITED Contract electronics manufacturer | 314 |
| 12 | IHG UK LEASED HOTELS LIMITED Leased hotel subsidiary of IHG | 290 |
Most profitable companies in Windsor 2026
Top operating filers by latest pre-tax profit
| # | Company | Pre-tax profit | Employees |
|---|---|---|---|
| 01 | ITW LIMITED Diversified industrial manufacturing subsidiary | £541M | 1,895 |
| 02 | IHG HOTELS LIMITED Hotel franchisor and management subsidiary | £99M | 484 |
| 03 | DYNO-ROD LIMITED registered office Emergency drainage and plumbing franchise | £15M | 141 |
| 04 | NETAPP UK LTD Data storage and management subsidiary | £10M | 278 |
| 05 | SQUARE HEALTH LIMITED Healthcare services provider for insurers | £10M | 136 |
| 06 | NEILSON FINANCIAL SERVICES LIMITED Direct-to-consumer life insurance provider | £10M | 387 |
| 07 | SEKO LOGISTICS GROUP LIMITED group accounts Logistics and supply chain group | £9M | 376 |
| 08 | PORTHAVEN CARE HOMES NO 2 LIMITED Care home operator subsidiary | £7M | 702 |
| 09 | ETON BRIDGE PARTNERS LIMITED Executive search and consulting firm | £6M | 110 |
| 10 | SALUTEM LD TOPCO II LIMITED group accounts Specialist care holding company | £6M | 1,412 |
| 11 | GIOVANNI RANA (UK) LTD UK subsidiary of Pastificio Rana | £4M | 18 |
| 12 | IHG UK LEASED HOTELS LIMITED Leased hotel subsidiary of IHG | £4M | 290 |
Best-paid boards in Windsor
Highest directors' remuneration disclosed
| # | Company | Directors' pay | Employees |
|---|---|---|---|
| 01 | SIX CONTINENTS LIMITED InterContinental Hotels Group subsidiary | £9M | 399 |
| 02 | AREA SQ. LIMITED Specialised construction services provider | £3M | 157 |
| 03 | NETAPP UK LTD Data storage and management subsidiary | £2M | 278 |
| 04 | VALIDUS RISK MANAGEMENT LIMITED Financial risk management advisory firm | £2M | 88 |
| 05 | ETON BRIDGE PARTNERS LIMITED Executive search and consulting firm | £1M | 110 |
| 06 | INCEPTUA LIMITED Pharmaceutical goods wholesaler | £1M | 29 |
| 07 | IHG HOTELS LIMITED Hotel franchisor and management subsidiary | £1M | 484 |
| 08 | NEILSON FINANCIAL SERVICES LIMITED Direct-to-consumer life insurance provider | £999,134 | 387 |
| 09 | SEKO LOGISTICS GROUP LIMITED group accounts Logistics and supply chain group | £631,605 | 376 |
| 10 | GIOVANNI RANA (UK) LTD UK subsidiary of Pastificio Rana | £630,607 | 18 |
| 11 | ITW LIMITED Diversified industrial manufacturing subsidiary | £621,000 | 1,895 |
| 12 | SPIRIT ENERGY PRODUCTION UK LIMITED registered office Oil and gas production subsidiary | £553,000 | 434 |
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.
Companies ranked from their latest filed accounts at registered offices in Windsor. 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.