Colin trained with Henderson & Co in Greenock before moving to BDO in 1987. In 1991, together with Christine Gemmell, he founded Abercrombie Gemmell. From 1991 to 2014, the firm built a strong reputation for service quality to the SME and entrepreneur market. Abercrombie Gemmell merged with French Duncan in 2014, with Colin becoming a partner in French Duncan.
Specialising in commercial advisory services to SMEs, specifically advising in fundraising, group reconstructions, tax planning and mergers/acquisitions, Colin has established a reputation with his clients for being passionate about their businesses and for proactively delivering innovative services aligned to their business goals.