- 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 
- ALASTAIR KERR LIMITED- 04582355 - Incorporated on 5 November 2002 
- ALASTAIR DICKENSON LIMITED- 04539548 - Incorporated on 19 September 2002 
- ALASTAIR WRAY LIMITED- 04990982 - Incorporated on 10 December 2003 
- ALASTAIR BOOTH LIMITED- 05776177 - Incorporated on 10 April 2006 
- ALASTAIR SLADE LIMITEDDisolved- 08693768 - Dissolved on 25 October 2022 
- ALASTAIR ATKINSON LTD.Active - Proposal to Strike off- 09028485 - Incorporated on 7 May 2014 
- ALASTAIR CONSULTING LIMITEDActive - Proposal to Strike off- 08360558 - Incorporated on 15 January 2013 
- ALASTAIR CLAYTON LTD- 13838310 - Incorporated on 10 January 2022