1982-8 South East Regional Committee, National Trust
1998-2001 Executive Committee, The London Library
1998-2006 Vice-President, National Association of Decorative and Fine Art Societies
1999-2003 Trustee, Holburne Museum, Bath
1999-2003 Trustee, Edward James Foundation, West Dean
2000-2006 Trustee, National Heritage Memorial Fund and Heritage Lottery Fund
2002-2007 Advisory Committee, Paul Mellon Centre for Studies in British Art
2004-2015 Arts Panel, National Trust for England and Wales
2005- 2013 Trustee, Charleston Trust (2007 – 2010 Chairman)
2012 Trustee, the Garden Museum, London
2013- Fellow, the Royal Historical Society
2014 - Trustee, the Emery Walker Trust, London