- HASSOP FITZWILLIAM LTDActive - Proposal to Strike off- 07892367 - Incorporated on 28 December 2011 
- FITZWILLIAM ADVISORS LP- SL020766 - Incorporated on 22 May 2015 
- FITZWILLIAM PM LTD- 09155347 - Incorporated on 31 July 2014 
- FITZWILLIAM FOODS LTDDisolved- 11467351 - Dissolved on 11 January 2022 
- FITZWILLIAM DUNNE LIMITED- 14128191 - Incorporated on 24 May 2022 
- FITZWILLIAM HOUSE LIMITED- 03416721 - Incorporated on 8 August 1997 
- FITZWILLIAM PROPERTY LLPDissolved- OC334304 - Dissolved on 21 June 2011 
- FITZWILLIAM CONSULTING LIMITED- 05660028 - Incorporated on 21 December 2005 
- FITZWILLIAM CONSULTANTS LTDDissolved- 04065560 - Dissolved on 6 May 2014 
- FITZWILLIAM INTERMEDIARIES LTDDissolved- 04109115 - Dissolved on 18 March 2014 
- FITZWILLIAM FREEHOLD LIMITED- 03237586 - Incorporated on 13 August 1996 
- HANBERRY FITZWILLIAM LIMITED- 07416150 - Incorporated on 22 October 2010 
- FITZWILLIAM ARMS LIMITEDActive - Proposal to Strike off- 08676868 - Incorporated on 4 September 2013 
- FITZWILLIAM 1955 LIMITEDActive - Proposal to Strike off- 08823483 - Incorporated on 20 December 2013 
- FITZWILLIAM FINANCE LIMITED- 08858090 - Incorporated on 23 January 2014 
- FITZWILLIAM SERVICES LIMITEDActive - Proposal to Strike off- 09608153 - Incorporated on 26 May 2015 
- FITZWILLIAM PR LIMITEDActive - Proposal to Strike off- 09359436 - Incorporated on 17 December 2014 
- FITZWILLIAM DESIGN LIMITEDDisolved- 11690239 - Dissolved on 13 December 2022 
- FITZWILLIAM APARTMENTS LTDActive - Proposal to Strike off- 10862035 - Incorporated on 12 July 2017 
- TAW FITZWILLIAM LTD- 11973560 - Incorporated on 1 May 2019