Shonaig has undertaken several non-executive roles including as Chairman of the National Trust for Scotland, The Princes Trust, The Robertson Trust, The Royal Lyceum Theatre and The Royal Edinburgh Military Tattoo.
Shonaig has served on the governing bodies of the University of Edinburgh, Edinburgh College of Art, the Royal Conservatoire of Scotland, the Open University, Heriot Watt University and Edinburgh Business School.
The first ever non-executive appointee to the Management and Strategic Boards of Scottish Government, she became the first lay person to chair its Audit Committee. She was Lead Non-Executive Member of the Management Board of the Office of Secretary of State for Scotland . She was a member of the UK Government and Scottish Parliament’s Commission on Scottish Devolution, the Scottish Executive’s Culture Commission and its Knowledge Economy Task Force.
Shonaig is currently chair of the Advisory Panel of Quilter Cheviot CAIF. a trustee of the Scottish Golf Charitable Trust Limited, Chair of the Edinburgh International Culture Summit Foundation, Chair of Euan’s Guide and President of SCDI.