- 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 
- ALASTAIR STUART LIMITEDDissolved- SC509585 - Dissolved on 5 June 2018 
- ALASTAIR WILDE LIMITEDActive - Proposal to Strike off- 10796211 - Incorporated on 31 May 2017 
- ALASTAIR CRACKNELL LTD- 11518149 - Incorporated on 15 August 2018 
- ALASTAIR LITTLE LIMITEDDissolved- 01843751 - Dissolved on 25 August 2011 
- ALASTAIR FINDLAY LIMITED- 13181412 - Incorporated on 5 February 2021 
- ALASTAIR JAMES LIMITEDDisolved- 14839792 - Dissolved on 8 October 2024 
- ALASTAIR AITKEN LIMITED- SC819108 - Incorporated on 12 August 2024 
- ALASTAIR SOLUTION LTD- 16275686 - Incorporated on 25 February 2025 
- ALASTAIR HOWIE LIMITED- 03476007 - Incorporated on 4 December 1997 
- ALASTAIR LEE LIMITED- 06331805 - Incorporated on 2 August 2007 
- ALASTAIR HANSON LIMITED- 06909509 - Incorporated on 19 May 2009 
- ALASTAIR CREATIVE LIMITEDDissolved- 07149145 - Dissolved on 3 June 2014