UK
  • TNM committee (since 2018- )
  • London digital Collaborative (since 2018- )
  • Indo-UK Breast Cancer Forum (since 2018- )
  • UK Breast Cancer group (since 2017- )
  • Royal Society of Medicine (since 2016 - ) – President elect , Oncology section
  • Department of Health Steering Committee Member, for guidance on management of radiation accidents (since 2008-2012)
  • Department of Health inter-disciplinary Group on clinical care and service configuration following a radiation accident (since 2008-2012)
  • Stem cell Users group (2001-2004)
  • JACIE accreditation committee, Royal Marsden (2002-2003)
  • HICC (Hospital Infection Control Committee) Royal Marsden (2001-2003)
  • Leukaemia/Myeloma tumour working Group- South West London Cancer Network (2002-2004)
  • Pan-Thames purchasing BMT Consortium (2001-2004)
  • Association of Cancer Physicians, UK (2002-2009) (2017 – continuing )
  • British Society for Blood and Marrow Transplantation (2001-2004)
  • British Medical Association (2002-2008) (2017 – continuing )
  • United Kingdom Myeloma Forum Clinical Trials committee (2002-2003)
  • General Medical Council (1998- )
International
  • International biliary tract cancer consortium (IBTCC, since 2013- )
  • International association of surgeons, gastroenterologists and oncologists IASGO (since 2013-)
  • Asia-Pacific Neuroendocrine tumour society APNET (since 2013-)
  • International and Asia-Pacific Hepatopancreatobiliary association IHPBA /AP-HPBA (since 2013- )
  • International Advisory Panel on Fungus Infections, Pfizer Limited (2001-2005)
  • European Haematology Association (EHA) (2001-2009)
  • Stem Cell Trialists Collaborative Group (2002-2007)
  • Multiple Myeloma Working sub-Committee of EBMT (2002-2009)
  • Chronic Leukaemia Working Party of EBMT (2002-2010)
  • Member, Acute Leukaemia Working Party, European Blood and Marrow Transplantation (EBMT) Group (2002-2004)
  • Scientific Advisor, International Myeloma Foundation (2002-2006)
  • Early Breast Cancer Trialists Collaborative Group (2006, 2010, 2012, 2013, 2016, 2018)
  • European School of Medical Oncology (since 2006- )
  • American Society of Haematology (2000-2012)
  • American Society of Clinical Oncology (since 2001- )
  • Secretary of the EBMT Nuclear Accident Committee (since 2001- )