- ALASTAIR READ LTD- 09907524 - Incorporated on 8 December 2015 
- J R & G W THOMSON- SL001168 - Incorporated on 18 January 1988 
- D. & D. W. D. THOMSON- SC030287 - Incorporated on 21 September 1954 
- G W THOMSON- SC499010 - Incorporated on 26 February 2015 
- PROVANMILL MOT LIMITEDDisolved- SC839380 - Dissolved on 17 June 2025 
- PROVANCE PROPERTY LTD- 13300581 - Incorporated on 29 March 2021 
- @ALASTAIR WHITE LTDLiquidation- NI621518 - Incorporated on 19 November 2013 
- ALASTAIR CRAIG LTDActive - Proposal to Strike off- 12459736 - Incorporated on 12 February 2020 
- PHILLIPS PROVAN INTERNATIONAL LIMITEDDissolved- 05374685 - Dissolved on 20 July 2010 
- PROVAN SALES & MARKETING LTDActive - Proposal to Strike off- SC421932 - Incorporated on 16 April 2012 
- TAYLOR MADE DEV LTD- 11630107 - Incorporated on 18 October 2018 
- ALASTAIR MARSH LTD- 07535353 - Incorporated on 18 February 2011 
- ALASTAIR DAVEY LTD- 14840973 - Incorporated on 2 May 2023 
- ALASTAIR HOWE LTDActive - Proposal to Strike off- 09346463 - Incorporated on 9 December 2014 
- ALASTAIR KAMA LTDDisolved- 11513676 - Dissolved on 26 October 2021 
- PROVAN HATCH HOLDINGS LIMITEDActive - Proposal to Strike off- 01666686 - Incorporated on 23 September 1982 
- PROVAN RACING MANAGEMENT LIMITEDDissolved- 04333114 - Dissolved on 17 May 2011 
- PROVAN ENGINEERING SPECIALISTS LTD- SC384820 - Incorporated on 3 September 2010 
- ALASTAIRMEIKLE.ART LTDDisolved- 13304105 - Dissolved on 1 March 2022 
- PROVANT ENGINEERING LTDActive - Proposal to Strike off- 09115373 - Incorporated on 3 July 2014