| 1985-1986 | Chairman SERC Instrument Panel |
| 1985-1989 | Chairman SERC Organic Chemistry Committee |
| 1990-1993 | Royal Society, Sectional Committee 3 |
| 1992-1993 | Royal Society of Chemistry Vice President Perkin Division |
| 1991-1992 | HEFCE Research Assessment Exercise Panel Member |
| 1992-1993 | European Commission of the EU, Joint Research Centre Advisor |
| 1993-1995 | President Perkin Division, Royal Society of Chemistry |
| 1993-2004 | Chairman Novartis Foundation Executive Committee |
| 1993-2004 | University of London Standing Panel of Experts in Chemistry |
| 1993-1998 | Ciba/Novartis Foundation Trust Advisory Board |
| 1994 | Thieme IUPAC Prize in Synthetic Organic Chemistry, Selection Committee |
| 1994-1997 | Science and Engineering Base Board of the BBSRC |
| 1995-1996 | HEFCE Research Assessment Exercise Panel Member |
| 1995-1999 | Chairman Biomolecular Sciences Committee, BBSRC |
| 1997 | President of the Bürgenstock Conference |
| 1997-2000 | Society of Chemical Industry, Vice President |
| 1997 | Appointment of the Chief Executive of the EPSRC, Selection Panel |
| 1997 | European Commission of the EU, Invited Expert Assessor to COST D2 |
| 1997 | Selection Committee for the Katritzky Award, International Society of Heterocyclic Chemistry |
| 1997 | Springer Verlag Selection Committee ‘Springer Award in Organometallic Chemistry’ |
| 1997-2006 | Thieme Verlag Prize for Organic Synthesis, Selection Committee |
| 1997-1998 | Glaxo-Wellcome Fellowships Selection Committee |
| 1997-1998 | Zeneca Awards Selection Panel Member |
| 1997-1999 | Strategy Board of the BBSRC |
| 1997-2000 | The Royal Society, International Exchanges Committee Panel I(a) |
| 1997-2007 |
Invited Member of the International Scientific Committee of Institute European de Chimie et de Biologie, Bordeaux |
| 1997-2004 | The University of Basel, Switzerland, Invited Member of the Advisory Board for the Department of Chemistry |
| 1998-2008 | Dr. Paul Janssen Prize Selection Committee |
| 1999-2002 | Joint Infrastructure Fund, The Wellcome Trust ISAB Member |
| 1999-2010 | Novartis Young Investigator Award Committee |
| 1999-to date | International Advisory Board, Chulabhorn Research Institute, Thailand |
| 2000-2002 | President of the Royal Society of Chemistry (UK) |
| 2000-2003 | Royal Society of Chemistry, Salters’ Company & Jerwood Foundation, Green Chemistry Award, Selection Panel |
| 2000-2010 | Managing Trustee, The Drummond Trust, University College London |
| 2000-2004 | Trustee of the Royal Society of Chemistry Pension Fund |
| 2001-2006 | The Royal Society, University Research Fellowship Panel A(11) |
| 2001-2010 | Trustee of the Lloyd’s Tercentenary Foundation |
| 2001-2017 | Thieme Synthesis/Synlett, Advisor |
| 2002 | Chemicals Innovation and Growth Team (Dept. of Trade and Industry) |
| 2002 | Chairman EPSRC International Review of Chemistry, Steering Group |
| 2002 | The AstraZeneca Awards, Selection Panel Member |
| 2002 | EPSRC ‘Basic Technologies Programme’ Grant Awarding Panel |
| 2002-2009 | Jury ‘Grand Prix de la Maison de la Chimie’ |
| 2002-2005 | Faraday Partnership ‘Insight’ Programme Member of the Management Board |
| 2002-2004 | The Chemistry Leadership Council (Dept. of Trade and Industry) |
| 2003-2004 | Chemistry Innovation Group, Dept. of Trade and Industry |
| 2004-2007 | Member of Sectional Committee 3 The Royal Society |
| 2004-2007 | Chairman of the Aii Panel, The Royal Society |
| 2005-2008 | HEFCE Research Assessment Exercise Panel Member |
| 2005-2016 | Scientific Advisory Committee, Drug Discovery for Tropical Diseases Initiative, University of Dundee, UK |
| 2006-2009 | The Hooke Committee, The Royal Society |
| 2007 | Chairman, Advances in Synthetic and Medicinal Chemistry, St. Petersburg, Russia |
| 2008 | President, Belgian Organic Synthesis Symposium, Ghent, Belgium |
| 2009-2014 | A. Ian Scott Medal Selection Jury |
| 2011 | Chairman, EPSRC Programme Grant Panel |
| 2011-2012 | Chairman, Pharmaceutical Sciences Scientific Advisory Panel, Pfizer, USA |
| 2011-2016 | Member Pharmaceutical Sciences Scientific Advisory Panel, Pfizer, USA |
| 2011-2016 | Imperial College Institute of Chemical Biology, International Advisory Board |
| 2011-2016 | The Royal Society, Nominations Committee |
| 2011-2014 | 3D Fragment Consortium, Member of the Advisory Board |
| 2012-2017 | IFF, New York, USA Scientific Advisory Board |
| 2013-2019 | IUPAC, 47th World Chemical Congress, International Advisory Board |
| 2013-2016 | EPSRC Strategic Advisory Network |
| 2014-2018 | Cardiff University Scientific Advisory Board |
| 2014 | Ryoji Noyori Prize Selection Committee (Society of Synthetic Organic Chemistry) |
| 2014-2019 | University of Oxford Scientific Advisory Board, Synthesis for Biology and Medicine, CDT |
| 2014 | Appointment Committee, Dean of Faculty of Natural Sciences, Imperial College, London |
| 2016-2018 | Selection Committee IUPAC Thales Nano Prize in Flow Chemistry |
| 2016 | Royal Society of Chemistry Haworth Memorial Lectureship Selection Panel |
| 2018 | External Review Board, Institut de Chimie des Substances Naturelles, Gif sur Yvette, France |
| 2018-2022 | External Advisory board, ROAR, Imperial College London |
| 2018-2022 | Royal Society, Industry Temporary Nominating Group (TNG) |
