FIHort, NDH (Hons), MBPR (Hort. Colin is a director of HortiCS, a horticultural advisory business, He was employed by SAC as the Senior Horticultural Advisor from 1988–2002 providing an advisory service to the north and east of Scotland. He is a director of Trellis and Chairman of Pitcaple Environment Project Ltd. The latter is a registered charity providing horticultural training facilities for special needs and disabled adults in the Inverurie area. He is a regular broadcaster on the BBC Potting Shed programme.