- ALASTAIR CHAMBERS LTDActive - Proposal to Strike off- 11016023 - Incorporated on 17 October 2017 
- ALASTAIR HOLDINGS LIMITED- 15362203 - Incorporated on 19 December 2023 
- ALASTAIR BLYTH LTDActive - Proposal to Strike off- 08140036 - Incorporated on 12 July 2012 
- ALASTAIR MOORE LTDDisolved- 12342390 - Dissolved on 7 December 2021 
- ALASTAIR NOYCE LTD- SC684008 - Incorporated on 18 December 2020 
- REG VARDY (RENTALS) LIMITED- 02262800 - Incorporated on 27 May 1988 
- ALASTAIR STUART LTD- 13656550 - Incorporated on 1 October 2021 
- FUSION LANDSCAPING AND MAINTENANCE LIMITED- 04412359 - Incorporated on 9 April 2002 
- THINK CONSULTING LTD- 10982583 - Incorporated on 26 September 2017 
- MR.MR. LTDDisolved- 14252327 - Dissolved on 5 December 2023 
- MR MR2 LTD- 11218539 - Incorporated on 21 February 2018 
- THE ALASTAIR RAMSAY CHARITABLE TRUST- 06449375 - Incorporated on 10 December 2007 
- ALASTAIR BURNS & CO LTD.- 03566574 - Incorporated on 19 May 1998 
- ALASTAIR ARTHUR LTDDisolved- 08985840 - Dissolved on 11 October 2022 
- ALASTAIR MACKIE LTD- 10955343 - Incorporated on 11 September 2017 
- MR & MR LTD- 16489396 - Incorporated on 2 June 2025 
- ALASTAIR SLAY LIMITEDDissolved- 06708823 - Dissolved on 23 October 2012 
- ALASTAIR MILLAR LIMITEDDisolved- SC420242 - Dissolved on 31 January 2023 
- ALASTAIR WOODCOCK LIMITEDActive - Proposal to Strike off- 08924610 - Incorporated on 5 March 2014 
- ALASTAIR JAMES LIMITEDActive - Proposal to Strike off- 08554911 - Incorporated on 4 June 2013