- KAREN CLARKSON LIMITED- 07243080 - Incorporated on 5 May 2010 
- CLARKSON (TRUSTEES) LIMITED- 01207835 - Incorporated on 16 April 1975 
- CLARKSON CONSULTING LIMITEDActive - Proposal to Strike off- 03395759 - Incorporated on 1 July 1997 
- CLARKSON CAPITAL LIMITED- 03449388 - Incorporated on 8 October 1997 
- CLARKSON ACCOUNTANCY LIMITEDActive - Proposal to Strike off- 08021687 - Incorporated on 5 April 2012 
- CLARKSON WILBERFORCE COLLEGEDissolved- 06661717 - Dissolved on 19 June 2012 
- CLARKSON HAMILTON LIMITED- SC402359 - Incorporated on 24 June 2011 
- DEBBIE CLARKSON LTDActive - Proposal to Strike off- 07870211 - Incorporated on 5 December 2011 
- CLARKSON MAYER LIMITED- 04575721 - Incorporated on 29 October 2002 
- CLARKSON BOOKKEEPING LIMITED- SC435591 - Incorporated on 26 October 2012 
- CLARKSON HEATING LIMITED- SC513745 - Incorporated on 21 August 2015 
- CLARKSON PROJECTS LTDDisolved- 13640062 - Dissolved on 25 June 2024 
- ROBBIES FISH BAR T/A D & D (BATH) LTD- 08540553 - Incorporated on 22 May 2013 
- LANCASHIRE FARMS LTD- 01158036 - Incorporated on 24 January 1974 
- ROBBIE'S FISHMONGERS LTD- 11376683 - Incorporated on 22 May 2018 
- CLARKSON.TV LIMITEDActive - Proposal to Strike off- 09895165 - Incorporated on 30 November 2015 
- ROBBIECLAIRE LIMITEDDissolved- 07375153 - Dissolved on 1 May 2012 
- ROBBIES (HULL) LIMITED- 07465864 - Incorporated on 10 December 2010 
- UNIQUE REBELS UNION LTD- 07799711 - Incorporated on 6 October 2011 
- TP CLARKSON LIMITEDDisolved- 10830439 - Dissolved on 9 August 2023