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.

RankCompanyNet assetsEmployeesAccounts year end
1SPIRIT ENERGY LIMITED£1.3bnNot given31 December 2025
2GLENHOLME HEALTHCARE GROUP LIMITED£48.4m1,11331 March 2026
3WATERSIDE TOPCO LIMITED£16.9mNot given31 December 2025
4VALIDUS RISK MANAGEMENT LIMITED£9.8m11631 December 2025
5AREA SQ. LIMITED£9.6m16831 March 2026
6EVERRATI GROUP LIMITED£8.6m631 August 2025
7TRAVEL ASSETS GROUP LIMITED£8.0m031 December 2025
8DIGITAL SKILLS AUTHORITY LTD£7.7m3631 December 2024
9DIGITAL SKILLS AUTHORITY HD LTD£7.7m030 June 2025
10MEDINA PROPERTY LIMITED£7.3m125 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.

RankCompanyTurnoverAccounts year end
1SPIRIT ENERGY LIMITED£661.0m31 December 2025
2FOURFRONT HOLDINGS LIMITED£120.1m31 March 2026
3AREA SQ. LIMITED£109.9m31 March 2026
4GLENHOLME HEALTHCARE GROUP LIMITED£48.8m31 March 2026
5MCCLOSKEY EQUIPMENT LIMITED£16.3m31 March 2025
6DOCTORS CHAMBERS HOLDINGS LIMITED£8.9m31 March 2025
7SAFO UK LIMITED£6.1m31 December 2025
8CUMBERLAND LODGE£3.0m31 August 2025
9WINDSOR FESTIVAL SOCIETY LIMITED (THE)£215k30 November 2025
10PENRIVER DESIGN LIMITED£128k31 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

CompanyIncorporated
ECOMMFLEET LTD9 October 2026
STONEBRIDGE HOUSING MANAGEMENT LTD9 October 2026
DELANTECH CONSULTING LIMITED9 October 2026
DC28 NEXUS LIMITED8 October 2026
CITRINECOM LTD8 October 2026
SMYTHSON LTD7 October 2026
FOLIOS MEDIA LIMITED7 October 2026
BAIG LOGISTIC SERVICES LTD5 October 2026
LM ENTERTAINMENT LTD5 October 2026
MMQ LTD2 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}.