Since then, Shonaig has undertaken several non-executive roles including as Chairman of the National Trust for Scotland, Prosper (formerly known as Scottish Council for Development and Industry), The Princes Trust, The Princes Scottish Youth Business Trust, The Royal Edinburgh Military Tattoo, The Royal Lyceum Theatre Limited and the Robertson Trust.
With a strong commitment to education, 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.
Shonaig was appointed as the first ever non-executive appointee to the Management and Strategic Boards of Scottish Government where she became the first lay person to chair its Audit Committee. From 2015 until 2020 she was Lead Non-Executive Member of the Management Board of the Office of Secretary of State for Scotland and the Office of the Advocate General. She was a member of the UK Government and Scottish Parliament’s Commission on Scottish Devolution (“the Calman Commission”), the Scottish Executive’s Culture Commission and its Knowledge Economy Task Force.
She is currently President of Prosper, Chair of the Advisory Panel of Quilter Cheviot CAIF, a trustee of the Scottish Golf Charitable Trust Limited, a trustee of Euan’s Guide and a Fellow of the Royal Society of Edinburgh.