- Michael, Mr. RING- Born January 1940 - The Coach House, Byron Road, Worthing, West Sussex, BN11 3HN 
- MR & MRS S LTDActive - Proposal to Strike off- 12290244 - Incorporated on 30 October 2019 
- TIM COLQUHOUN ARCHITECTS LIMITED- 05541509 - Incorporated on 19 August 2005 
- MURIEL COLQUHOUN EQUINE LTD.- SC361743 - Incorporated on 25 June 2009 
- THORBURN COLQUHOUN HOLDINGS LIMITED- SC085696 - Incorporated on 28 November 1983 
- COLQUHOUN SOFTWARE ENGINEERING LIMITEDActive - Proposal to Strike off- 08688392 - Incorporated on 12 September 2013 
- EDWARD COLQUHOUN & COMPANY LTDActive - Proposal to Strike off- 11049111 - Incorporated on 6 November 2017 
- Michael Colquhoun COLE-FONTAYN- Born December 1961 - First Floor 4 City Road, Finsbury Square, London, United Kingdom, EC1Y 2AA 
- Michael Colquhoun COLE-FONTAYN- Born December 1961 - 39th Floor 25 Canada Square, London, United Kingdom, E14 5LQ 
- MICHAEL HENRY COLQUHOUN PERY- Born May 1937 - 9 CAMBUSLANG ROAD, GLASGOW, SCOTLAND, G32 8NB 
- MICHAEL GORDON COLQUHOUN HART- Born October 1950 - 55 WARE ROAD, HERTFORD, HERTFORDSHIRE, SG13 7ED 
- MICHAEL COLQUHOUN COLE-FONTAYN- Born December 1961 - ONE CANADA SQUARE, LONDON, E14 5AL 
- MICHAEL GORDON COLQUHOUN HART- 55 WARE ROAD, HERTFORD, HERTFORDSHIRE, SG13 7ED 
- STEPHEN MICHAEL WARREN MRCVS LIMITEDDisolved- 09459320 - Dissolved on 2 May 2023 
- MICHAEL HENRY COLQUHOUN PERY- Born May 1937 - ARDTUR, APPIN, ARGYLL, PA38 4DD 
- Michael Colquhoun COLE-FONTAYN- Born December 1961 - 30 Threadneedle Street, London, EC2R 8JB 
- Michael Colquhoun COLE-FONTAYN- Born December 1961 - 3 Cranley Mews, London, England, SW7 3BX 
- CHRISTOPHER MICHAEL COLQUHOUN ALLEN- Born December 1948 - 232 HILLS ROAD, CAMBRIDGE, CAMBRIDGESHIRE, CB2 8QE 
- MICHAEL HENRY COLQUHOUN PERY- Born May 1937 - HOLNE BRAKE, BOVEY TRACEY, DEVON, TQ13 9LJ 
- MICHAEL COLQUHOUN COLE-FONTAYN- Born December 1961 - ROYAL LIVER BUILDING PIER HEAD, LIVERPOOL, ENGLAND, L3 1LL