Companies in Windsor
4,431 active companies have their registered office in the Windsor post town, 486 of them incorporated in the last 12 months. That is 0.09% of active UK companies with a recorded post town.
Based on registered office addresses on the Companies House register; a company's registered office is not always where it trades.
Key figures
- Active companies
- 4,431
- Incorporated in the last 12 months
- 486 (11.0%)
- Average company age
- 10.5 years
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Largest companies in Windsor by net assets
Ranked by net assets (total assets less total liabilities) in each company's latest accounts on file, for periods ending in the last 30 months, as at 11 October 2026. Net assets are not turnover and do not measure size of trade. Employees are shown where the accounts state an average number.
| Rank | Company | Net assets | Employees | Accounts year end |
|---|---|---|---|---|
| 1 | SPIRIT ENERGY LIMITED | £1.3bn | Not given | 31 December 2025 |
| 2 | GLENHOLME HEALTHCARE GROUP LIMITED | £48.4m | 1,113 | 31 March 2026 |
| 3 | WATERSIDE TOPCO LIMITED | £16.9m | Not given | 31 December 2025 |
| 4 | VALIDUS RISK MANAGEMENT LIMITED | £9.8m | 116 | 31 December 2025 |
| 5 | AREA SQ. LIMITED | £9.6m | 168 | 31 March 2026 |
| 6 | EVERRATI GROUP LIMITED | £8.6m | 6 | 31 August 2025 |
| 7 | TRAVEL ASSETS GROUP LIMITED | £8.0m | 0 | 31 December 2025 |
| 8 | DIGITAL SKILLS AUTHORITY LTD | £7.7m | 36 | 31 December 2024 |
| 9 | DIGITAL SKILLS AUTHORITY HD LTD | £7.7m | 0 | 30 June 2025 |
| 10 | MEDINA PROPERTY LIMITED | £7.3m | 1 | 25 October 2025 |
Only companies whose latest figures balance and pass our checks, in pounds and not dormant, are ranked, so this is the largest among those we can show reliably, not every company registered in Windsor. Figures are as filed with Companies House; CompanyStack does not audit them. A registered office is not always where a company trades.
Most common industries
Largest by reported turnover in Windsor
Ranked by turnover in each company's latest accounts on file, for periods ending in the last 30 months, as at 11 October 2026. Many small companies file accounts without turnover, so this ranks the companies that report it.
| Rank | Company | Turnover | Accounts year end |
|---|---|---|---|
| 1 | SPIRIT ENERGY LIMITED | £661.0m | 31 December 2025 |
| 2 | FOURFRONT HOLDINGS LIMITED | £120.1m | 31 March 2026 |
| 3 | AREA SQ. LIMITED | £109.9m | 31 March 2026 |
| 4 | GLENHOLME HEALTHCARE GROUP LIMITED | £48.8m | 31 March 2026 |
| 5 | MCCLOSKEY EQUIPMENT LIMITED | £16.3m | 31 March 2025 |
| 6 | DOCTORS CHAMBERS HOLDINGS LIMITED | £8.9m | 31 March 2025 |
| 7 | SAFO UK LIMITED | £6.1m | 31 December 2025 |
| 8 | CUMBERLAND LODGE | £3.0m | 31 August 2025 |
| 9 | WINDSOR FESTIVAL SOCIETY LIMITED (THE) | £215k | 30 November 2025 |
| 10 | PENRIVER DESIGN LIMITED | £128k | 31 January 2025 |
Only companies whose latest figures balance and pass our checks, in pounds and not dormant, are ranked, so this is the largest among those we can show reliably, not every company. Figures are as filed with Companies House; CompanyStack does not audit them.
Newest companies
| Company | Incorporated |
|---|---|
| ECOMMFLEET LTD | 9 October 2026 |
| STONEBRIDGE HOUSING MANAGEMENT LTD | 9 October 2026 |
| DELANTECH CONSULTING LIMITED | 9 October 2026 |
| DC28 NEXUS LIMITED | 8 October 2026 |
| CITRINECOM LTD | 8 October 2026 |
| SMYTHSON LTD | 7 October 2026 |
| FOLIOS MEDIA LIMITED | 7 October 2026 |
| BAIG LOGISTIC SERVICES LTD | 5 October 2026 |
| LM ENTERTAINMENT LTD | 5 October 2026 |
| MMQ LTD | 2 October 2026 |
Search further
Filter companies by postcode, industry and financials with the CompanyStack API — for example GET https://api.companystack.co.uk/company/postcode/{postcode}.
