- FENN CONSTRUCTION LIMITED- 05745173 - Incorporated on 16 March 2006 
- JULIA FENN LTDDisolved- 07696121 - Dissolved on 16 May 2023 
- PARRISH & FENN LIMITED- 07888506 - Incorporated on 21 December 2011 
- FENN & HEXTON LIMITEDActive - Proposal to Strike off- 01369265 - Incorporated on 18 May 1978 
- FENN WRIGHT LLP- OC431458 - Incorporated on 14 April 2020 - 20 Duke Street, Chelmsford, CM1 1HL 
- FENN BUILDERS LTDDisolved- 10204944 - Dissolved on 5 March 2025 
- FENN CREATIVE LTDDisolved- 09780164 - Dissolved on 18 August 2023 
- FENN TRADING LTDDisolved- 12407446 - Dissolved on 26 October 2024 
- L FENN LIMITEDDisolved- 13148595 - Dissolved on 19 March 2024 
- FENN RESIDENTIAL LTDDisolved- 14350073 - Dissolved on 26 December 2023 
- FENN CRUZ LIMITEDDisolved- 14428017 - Dissolved on 26 March 2024 
- DOUGLAS AND DOUGLAS LTD- 15422759 - Incorporated on 18 January 2024 
- MAINSTREAM CAPITAL PARTNERS LLP- OC404386 - Incorporated on 17 February 2016 
- WESTERN PARK AESTHETICS CLINIC LTD- 10031955 - Incorporated on 29 February 2016 
- FENN HOLIDAYS LIMITED- 00883967 - Incorporated on 21 July 1966 
- FENNELLY LTDActive - Proposal to Strike off- 08708641 - Incorporated on 27 September 2013 
- J & D FENN LIMITED- 11272085 - Incorporated on 23 March 2018 
- FENNYBOY LTD- 12537800 - Incorporated on 30 March 2020 
- C. P. FENN LIMITEDLiquidation- 03695546 - Incorporated on 14 January 1999 
- W.FENN LIMITEDLiquidation- 00752989 - Incorporated on 11 March 1963