Scientific and Education Committee, Chair to 2009, British Medical Ultrasound Society, 2006.
Finance Committee, Member, British Medical Ultrasound Society, 2006-2009.
Training Committee, Member, British Medical Ultrasound Socieity, 2006-2009.
Publications Committee, Member, British Medical Ultrasound Society, 2006-2009.
Council, Member, British Medical Ultrasound Society, 2004-2009.
Executive Committee, General Secretary (Vice President), International Society for Skin Imaging, 2003-2007.
Committee for application to the EU Framework 6 grant programme, UK co-ordinator, European Network of Excellence in Medical Ultrasound, 2002-2002.
Executive Committee, Member, International Association for Breast Ultrasound, 1997.
Inaugral Organising Committee and Faculty, Founding Member and Faculty, International Breast Ultrasound School, 1992.
Executive Committee, Elected Vice President, International Society for Skin Imaging, 1993-1995.
Executive Committee, Elected President, International Association for Breast Ultrasound, 1991-1997.
Organising Committee, Elected Chairman, International Congress on the Ultrasonic Examination of the Breast, subsequently the International Association for Breast Ultrasound, 1987-1991.
Organising Committee, Founder, The British Group on Ultrasound Breast Examination, 1979-1983.
Organizing Committee, Member, International Congress on the Ultrasonic Examination of the Breast, subsequently the International Association for Breast Ultrasound, 1985-1987.
Publications Committee, Elected member, European Federation of Societies for Ultrasound in Medicine and Biology, 2007-2009.
Scientific and Education Committee, Member, British Medical Ultrasound Society, 2009.
Advisory committee for the NCI Program-Project Grant “New breast cancer imaging methods”, Member, Dartmouth College, Hanover, NH, USA, 2000-2005.
Independent advisor for the NIH Program-Project Grant "Elastography", Member, University of Texas, Houston, 2001-2001.
National Institutes of Health study section Programme Project Application number 1 PO1 CA64597-01, Member, National Cancer Institute, Bethesda, 1994-1994.
Advisory board on 4D medical ultrasound, Member, GEC-Marconi Ltd., Chelmsford and Caswell, 1999-2001.
Advisory board on ultrasound and elasticity imaging methods, Member, Supersonic Imagine, Aix en Provence, 2006.
Advisory board, Member, Michelson Diagnostics, 2008.