Biggest companies in Windsor 2026
- Companies
- 116
- Total revenue
- £57.21bn
- Total jobs
- 71,394
CENTRICA PLC alone accounts for ~38% 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 | CENTRICA PLC registered office Multinational energy and services group | £21.57bn | 22,066 |
| 02 | BRITISH GAS TRADING LIMITED registered office | £14.52bn | 6,970 |
| 03 | INTERCONTINENTAL HOTELS GROUP PLC group accounts Listed global hotel operator | £3.84bn | 19,040 |
| 04 | CENTRICA ENERGY MARKETING LIMITED registered office Wholesale energy trading subsidiary | £2.33bn | — |
| 05 | ITW UK FINANCE BETA LIMITED Group finance vehicle | £1.89bn | 0 |
| 06 | ITW LIMITED Diversified industrial manufacturing subsidiary | £429M | 1,836 |
| 07 | CENTRICA LNG UK LIMITED registered office LNG operations subsidiary | £385M | 0 |
| 08 | SPIRIT ENERGY NORTH SEA LIMITED registered office | £360M | — |
| 09 | IHG HOTELS LIMITED Hotel franchisor and holding company | £303M | 492 |
| 10 | NETAPP UK LTD Data infrastructure and IT services provider | £165M | 278 |
| 11 | SIX CONTINENTS LIMITED Intellectual property and treasury holdco | £159M | 399 |
| 12 | SEKO LOGISTICS GROUP LIMITED group accounts | £145M | 336 |
Biggest employers in Windsor
Top filers by latest reported headcount
| # | Company | Employees |
|---|---|---|
| 01 | CENTRICA PLC registered office Multinational energy and services group | 22,066 |
| 02 | INTERCONTINENTAL HOTELS GROUP PLC group accounts Listed global hotel operator | 19,040 |
| 03 | BRITISH GAS SERVICES LIMITED registered office Home services and insurance provider | 7,486 |
| 04 | ITW LIMITED Diversified industrial manufacturing subsidiary | 1,836 |
| 05 | SALUTEM LD TOPCO LIMITED group accounts Holdco for specialist care providers | 1,520 |
| 06 | PORTHAVEN CARE HOMES NO 2 LIMITED Residential care home operator | 702 |
| 07 | IHG HOTELS LIMITED Hotel franchisor and holding company | 492 |
| 08 | SPIRIT ENERGY PRODUCTION UK LIMITED registered office | 434 |
| 09 | SIX CONTINENTS LIMITED Intellectual property and treasury holdco | 399 |
| 10 | NEILSON FINANCIAL SERVICES LIMITED | 387 |
| 11 | WINDSOR LEARNING PARTNERSHIP | 375 |
| 12 | SEKO LOGISTICS GROUP LIMITED group accounts | 336 |
Most profitable companies in Windsor 2026
Top operating filers by latest pre-tax profit
| # | Company | Pre-tax profit | Employees |
|---|---|---|---|
| 01 | INTERCONTINENTAL HOTELS GROUP PLC group accounts Listed global hotel operator | £795M | 19,040 |
| 02 | BRITISH GAS TRADING LIMITED registered office | £477M | 6,970 |
| 03 | ITW LIMITED Diversified industrial manufacturing subsidiary | £179M | 1,836 |
| 04 | IHG HOTELS LIMITED Hotel franchisor and holding company | £173M | 492 |
| 05 | DYNO-ROD LIMITED registered office Drainage and plumbing franchise operator | £15M | 141 |
| 06 | NETAPP UK LTD Data infrastructure and IT services provider | £10M | 278 |
| 07 | SQUARE HEALTH LIMITED | £10M | 136 |
| 08 | NEILSON FINANCIAL SERVICES LIMITED | £10M | 387 |
| 09 | PORTHAVEN CARE HOMES NO 2 LIMITED Residential care home operator | £7M | 702 |
| 10 | SEKO LOGISTICS GROUP LIMITED group accounts | £7M | 336 |
| 11 | ETON BRIDGE PARTNERS LIMITED | £6M | 110 |
| 12 | SALUTEM LD TOPCO II LIMITED group accounts | £6M | 1,412 |
Best-paid boards in Windsor
Highest directors' remuneration disclosed
| # | Company | Directors' pay | Employees |
|---|---|---|---|
| 01 | SIX CONTINENTS LIMITED Intellectual property and treasury holdco | £9M | 399 |
| 02 | INTERCONTINENTAL HOTELS GROUP PLC group accounts Listed global hotel operator | £6M | 19,040 |
| 03 | AREA SQ. LIMITED Workplace design and fit-out specialist | £3M | 157 |
| 04 | NETAPP UK LTD Data infrastructure and IT services provider | £2M | 278 |
| 05 | VALIDUS RISK MANAGEMENT LIMITED Financial risk and hedging advisor | £2M | 88 |
| 06 | ETON BRIDGE PARTNERS LIMITED | £1M | 110 |
| 07 | INCEPTUA LIMITED | £1M | 29 |
| 08 | NEILSON FINANCIAL SERVICES LIMITED | £999,134 | 387 |
| 09 | KEELER LIMITED | £917,981 | 145 |
| 10 | IHG HOTELS LIMITED Hotel franchisor and holding company | £772,000 | 492 |
| 11 | SEKO LOGISTICS GROUP LIMITED group accounts | £667,600 | 336 |
| 12 | GIOVANNI RANA (UK) LTD | £630,607 | 18 |
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.