- DAVID JH ALLAN CONSULTANCY LIMITED- SC825488 - Incorporated on 10 October 2024 
- DOIGS OF TROON LTD.- 07806148 - Incorporated on 11 October 2011 
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- MR DAVID JOHN CLAPHAM LTD- 13717383 - Incorporated on 2 November 2021 
- MR DAVID JAMES MARTIN LTD- 16388942 - Incorporated on 15 April 2025 
- DOIGS COURIERS LTDActive - Proposal to Strike off- SC592680 - Incorporated on 28 March 2018 
- MR DAVID JOHN CLAPHAM LTD- 11962964 - Incorporated on 25 April 2019 
- IAN CHARLES DOIG LTD- 09832846 - Incorporated on 20 October 2015 
- DOIG COMMUNICATIONS LIMITED- 04942770 - Incorporated on 24 October 2003 
- DOIG PSYCHOLOGY LTD- 11389474 - Incorporated on 30 May 2018 
- DOIG & MACKENZIE LIMITED- SC758778 - Incorporated on 14 February 2023 
- CATHERINE DOIG LIMITEDDissolved- SC292171 - Dissolved on 9 February 2016 
- DOIG CLASSICS LIMITEDDissolved- 07674176 - Dissolved on 1 October 2013 
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- MR DAVID ENTERPRISES LIMITEDDissolved- 05897067 - Dissolved on 9 August 2011 
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- SEAN DOIG LIMITEDActive - Proposal to Strike off- 11158599 - Incorporated on 19 January 2018 
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- ALLAN AND ALLAN LLP- OC360624 - Incorporated on 5 January 2011