From 2004 to 2014 he was Chief Executive of the Scottish Wildlife Trust. During this time He led the Trust in its trial reintroduction of the European Beaver, established Scotland’s Living Landscape programme, championed the Ecosystem Scale Approach to Conservation, ran the inaugural World Forum on Natural, and expanded the Trust’s education, membership and engagement programmes.
He is the 16th Regius Keeper of RBGE. RBGE is a charitable trust and Non-Departmental Public Body, delivering world-leading plant science, conservation and education and engagement programmes, with the mission to ‘Explore, Conserve and Explain the World of Plants for a Better Future'. Its work is underpinned by the Garden's internationally important collections of living and preserved plants, a large specialist Library, and an archive. The four gardens that house the living collection are a major tourist attraction with 1million visits per year.
He is an Honorary Professor of the University of Edinburgh, a Fellow of the Royal Geographical Society and was appointed MBE in 1996. His personal interests include horticulture, skiing, walking and ornithology.