- DUNCAN CLARK (INSURANCE BROKERS) LIMITED- 01463306 - Incorporated on 27 November 1979 
- ST. GEORGE'S SCHOOL WINDSOR CASTLE- 04347052 - Incorporated on 4 January 2002 
- R.J. MAGNUS BUILDERS LTD- 05659518 - Incorporated on 20 December 2005 
- 22 WINDSOR LIMITED- 06533564 - Incorporated on 13 March 2008 
- WINDSOR SPINE LTDDisolved- 08118135 - Dissolved on 8 January 2022 
- WINDSOR WORKS LTD- 12411451 - Incorporated on 20 January 2020 
- WINDSOR CAPITAL L.P.- SL006649 - Incorporated on 1 July 2008 
- THE DEN (WINDSOR) LTDActive - Proposal to Strike off- 10446390 - Incorporated on 26 October 2016 
- A.W. WINDSOR LIMITEDDisolved- 00644296 - Dissolved on 3 January 2023 
- WINDSOR FARMS LTDDisolved- 12570835 - Dissolved on 17 January 2023 
- MR & MRS TANG LTD- 15171097 - Incorporated on 28 September 2023 
- MAGNUS PROPERTY LIMITEDregistered- OE004541 - Incorporated on 21 November 2022 
- MAGNUS POPULUS LIMITEDDisolved- 14555854 - Dissolved on 31 October 2023 
- MAGNUS CONTRACTS LTD- 10776800 - Incorporated on 18 May 2017 
- CREER MAGNUS LIMITED- 14737173 - Incorporated on 17 March 2023 
- MAGNUS RESOURCES LIMITED- 15162847 - Incorporated on 25 September 2023 
- MAGNUS INVESTORS LTD- 15180293 - Incorporated on 2 October 2023 
- MAGNUS MARKETING LTD- NI710001 - Incorporated on 13 February 2024 
- MAGNUS HOMES LIMITED- 05358460 - Incorporated on 9 February 2005 
- MAGNUS INTERIOR LTD- 14208036 - Incorporated on 1 July 2022