- JASON 1 LTD- 11666339 - Incorporated on 8 November 2018 
- ST CHAD'S (BIRMINGHAM) HOLDINGS LIMITED- 08641772 - Incorporated on 7 August 2013 
- JASONLEE ELECTRICAL LTD.- 10024066 - Incorporated on 24 February 2016 
- INNER CITY PLUMBERS LTD- 10321479 - Incorporated on 9 August 2016 
- DOWNING TRADE LP- LP021129 - Incorporated on 19 July 2020 
- A DOWNING LIMITED- 05727261 - Incorporated on 2 March 2006 
- J DOWNING LIMITED- 15289111 - Incorporated on 16 November 2023 
- MASON DOWNING LTD- 15908597 - Incorporated on 20 August 2024 
- MGTS DOWNING FUND- IC269061 
- BV (FALMOUTH) LLP- OC361779 - Incorporated on 11 February 2011 
- KD REALISATIONS 2018 LIMITEDDisolved- 01630018 - Dissolved on 14 July 2021 
- DOWNING PLANT LTD- 04523515 - Incorporated on 2 September 2002 
- DOWNING GROUP LLP- OC440659 - Incorporated on 17 January 2022 - 10 Lower Thames Street, London, EC3R 6AF 
- M.DOWNING LIMITED- 15993851 - Incorporated on 2 October 2024 
- JASON'S TM LTDDisolved- 13726427 - Dissolved on 9 May 2023 
- DOWNING PINTS LTD- 15872236 - Incorporated on 2 August 2024 
- MR JASON K LTDActive - Proposal to Strike off- 09010751 - Incorporated on 25 April 2014 
- JASON&CO. LTD- 15716433 - Incorporated on 13 May 2024 
- JASOND LTD- 11879930 - Incorporated on 13 March 2019 
- JASON IT LTDDissolved- 11319995 - Dissolved on 24 September 2019