- JENNER ENGINEERING LIMITEDDissolved- 07700599 - Dissolved on 18 February 2014 
- JENNER CONSULTING LIMITED- 07513781 - Incorporated on 2 February 2011 
- JENNER CONSULTANCY LTD- 08219019 - Incorporated on 18 September 2012 
- ANDREW JENNER LIMITED- 09245345 - Incorporated on 2 October 2014 
- CLARE JENNER LIMITED- 10306179 - Incorporated on 1 August 2016 
- JENNER ESTATES LIMITED- 13573017 - Incorporated on 18 August 2021 
- JENNER ASSOCIATES LTD- 13254442 - Incorporated on 9 March 2021 
- NORRINGTON SOLAR FARM LIMITED- 08328159 - Incorporated on 12 December 2012 
- HUGH O'NEILL- LP005883 - Incorporated on 25 August 1998 
- JENNER ACCOUNTANTS LIMITED- 05085055 - Incorporated on 26 March 2004 
- JENNER TRADING LIMITEDDissolved- 05021822 - Dissolved on 18 June 2013 
- JENNER CONSTRUCTION LIMITEDActive - Proposal to Strike off- 08704488 - Incorporated on 24 September 2013 
- JENNER CONSTRUCTION LTD- 11777246 - Incorporated on 21 January 2019 
- JENNER ROTH LIMITED- 13244407 - Incorporated on 4 March 2021 
- JENNER HOSPITALITY LTD- 15997427 - Incorporated on 4 October 2024 
- JENNER ROAD 1960 LIMITED- 09124620 - Incorporated on 10 July 2014 
- THOMPSON JENNER LLP- OC352756 - Incorporated on 2 March 2010 
- JENNER VACCINE FOUNDATION- 03079818 - Incorporated on 14 July 1995 
- JENNER CONSULTING LTDActive - Proposal to Strike off- 09215959 - Incorporated on 12 September 2014 
- MANTHORPE & JENNER LTDActive - Proposal to Strike off- 09276912 - Incorporated on 23 October 2014