- MAD PROFESSOR LIMITED- 06191200 - Incorporated on 29 March 2007 
- PROFESSOR HIGGINBOTHAMS LTDActive - Proposal to Strike off- 09649052 - Incorporated on 20 June 2015 
- PROFESSOR MATHMO LTDDisolved- 08330972 - Dissolved on 26 December 2023 
- PROFESSOR PLUMB LIMITEDDisolved- 08342286 - Dissolved on 3 August 2021 
- PROFESSOR BLACKCAT LIMITEDDisolved- 08405032 - Dissolved on 17 January 2023 
- PROFESSOR PIZZA LTDActive - Proposal to Strike off- 11394169 - Incorporated on 1 June 2018 
- PROFESSOR SNEAKS LTDActive - Proposal to Strike off- SC588491 - Incorporated on 12 February 2018 
- NUTTY PROFESSOR LIMITEDActive - Proposal to Strike off- 13984276 - Incorporated on 17 March 2022 
- PROFESSOR INVESTOR LTDDisolved- 14283195 - Dissolved on 7 March 2023 
- PROFESSOR HASSAN LIMITEDDisolved- 14946688 - Dissolved on 10 December 2024 
- PROFESSOR SHEARBOMB LTD- 15258330 - Incorporated on 3 November 2023 
- PROFESSOR PEANUT LTDDisolved- 12984535 - Dissolved on 5 April 2022 
- PROFESSOR KLEEN LTD- SC807312 - Incorporated on 17 April 2024 
- PROFESSOR GAMES LTD- 15769697 - Incorporated on 10 June 2024 
- KATIE CALVERT LIMITED- 15172278 - Incorporated on 28 September 2023 
- PROFESSOR PUZZLE LIMITED- 04398865 - Incorporated on 20 March 2002 
- PROFESSOR MAP LIMITEDDissolved- 03135851 - Dissolved on 14 February 2012 
- INSTRUMENT PROFESSOR LIMITED- 06691705 - Incorporated on 8 September 2008 
- PROFESSOR MOUSE LTD- 06715527 - Incorporated on 6 October 2008 
- PROFESSOR LEAPER LIMITED- 07303176 - Incorporated on 2 July 2010