Biggest companies in Windsor 2026
- Companies
- 116
- Total revenue
- £55.26bn
- Total jobs
- 71,639
CENTRICA PLC alone accounts for ~39% 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 | £3.85bn | 19,040 |
| 04 | CENTRICA ENERGY MARKETING LIMITED registered office Wholesale energy trading subsidiary | £2.33bn | — |
| 05 | ITW LIMITED Diversified industrial manufacturing subsidiary | £429M | 1,836 |
| 06 | CENTRICA LNG UK LIMITED registered office LNG operations subsidiary | £399M | — |
| 07 | IHG HOTELS LIMITED | £303M | 492 |
| 08 | SPIRIT ENERGY NORTH SEA LIMITED registered office | £230M | — |
| 09 | NETAPP UK LTD | £165M | 278 |
| 10 | SIX CONTINENTS LIMITED Intellectual property and treasury holdco | £159M | 399 |
| 11 | SEKO LOGISTICS GROUP LIMITED group accounts | £145M | 336 |
| 12 | NEAS ENERGY LIMITED registered office | £117M | 0 |
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 | 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 II LIMITED group accounts | 1,539 |
| 06 | PORTHAVEN CARE HOMES NO 2 LIMITED | 734 |
| 07 | IHG HOTELS LIMITED | 492 |
| 08 | SPIRIT ENERGY PRODUCTION UK LIMITED registered office | 417 |
| 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 | £797M | 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 | £173M | 492 |
| 05 | DYNO-ROD LIMITED registered office | £15M | 138 |
| 06 | NETAPP UK LTD | £10M | 278 |
| 07 | SQUARE HEALTH LIMITED | £10M | 136 |
| 08 | NEILSON FINANCIAL SERVICES LIMITED | £10M | 387 |
| 09 | PORTHAVEN CARE HOMES NO 2 LIMITED | £8M | 734 |
| 10 | SALUTEM LD TOPCO II LIMITED group accounts | £8M | 1,539 |
| 11 | SEKO LOGISTICS GROUP LIMITED group accounts | £7M | 336 |
| 12 | ETON BRIDGE PARTNERS LIMITED | £6M | 112 |
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 | £6M | 19,040 |
| 03 | NETAPP UK LTD | £2M | 278 |
| 04 | AREA SQ. LIMITED | £2M | 168 |
| 05 | ETON BRIDGE PARTNERS LIMITED | £2M | 112 |
| 06 | INCEPTUA LIMITED | £1M | 29 |
| 07 | VALIDUS RISK MANAGEMENT LIMITED | £1M | 116 |
| 08 | NEILSON FINANCIAL SERVICES LIMITED | £999,134 | 387 |
| 09 | KEELER LIMITED | £917,981 | 145 |
| 10 | IHG HOTELS LIMITED | £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.
Filed accounts in October 2026 · Windsor
17 of the companies we profile in Windsor 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 | NEILSON FINANCIAL SERVICES LIMITED Financials | £87.4m | +11% | 387 | 31 Dec 2025 |
| 02 | BRITISH GAS SOCIAL HOUSING LIMITED Industrials | £76.5m | -2% | 495 | 31 Dec 2025 |
| 03 | ETON BRIDGE PARTNERS LIMITED Industrials | £72.7m | -5% | 112 | 31 Dec 2025 |
| 04 | SALUTEM LD TOPCO II LIMITED Health Care | £65.9m | +19% | 1,539 | 31 Mar 2026 |
| 05 | SALUTEM LD TOPCO LIMITED Health Care | £65.4m | +7% | 1,530 | 31 Mar 2026 |
| 06 | SURFACE TECHNOLOGY INTERNATIONAL LIMITED Industrials | £48.9m | -13% | 308 | 31 Dec 2025 |
| 07 | CENTRICA HIVE LIMITED Technology | £46.8m | -25% | 140 | 31 Dec 2025 |
| 08 | DOYLE MACHINERY LIMITED Consumer Discretionary | £21.0m | +8% | 31 | 31 Dec 2025 |
| 09 | VALIDUS RISK MANAGEMENT LIMITED Financials | £20.0m | +22% | 116 | 31 Dec 2025 |
| 10 | CENTRICA ENERGY ASSETS HOLDINGS LIMITED Utilities | £13.2m | — | 58 | 31 Dec 2025 |
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.