• RCPCH College Tutor 1997-2004
• KCW Health Authority Asthma Taskforce 1999-2001
• Member Council of Paediatric & Child Health Section Royal Society Medicine 2001-14.
• BTS Standards of Care Committee 2001-2003
• Chair BTS Working Group for Guideline on Paediatric Pleural Infection 2002-2004
• Specialist Reviewer British Guideline on the Management of Asthma, 2003
• Visiting Professor of Paediatrics, Ain Shams University, Cairo 2004-2006
• Member British Paediatric Respiratory Society Executive 2005-2014
• Deputy Convenor British Paediatric Respiratory Society (BPRS) 2005-2007
• Member RCPCH Continuing Professional Development Committee 2004-2007
• Cystic Fibrosis Trust Service Standards & Accreditation Group 2000-7
• External evaluator Northern Ireland Respiratory Framework, 2008.
• Member Academic Board RCPCH 2002-2008.
• Member Paediatric Specialty Training Committee North London, Essex & Herts, representing North London Teaching Hospitals 2002-8.
• Member American Thoracic Society Awards Committee 2006-8.
• Member British Thoracic Society Home Oxygen Working Party 2004-8.
• Member Specialty Board RCPCH 2007-9.
• Co-chair BTS Working Group for Guideline on Home Oxygen for Children 2007-9.
• Member RCPCH Respiratory College Specialist Advisory Committee 2004-10.
• President BPRS 2007-10; Vice President 2010-12.
• Member BTS Council 2007 –10.
• BTS Air Travel working party for guideline on managing passengers with respiratory disease planning air travel. 2009-11.
• Member BTS Specialist Advisory Group on Cystic Fibrosis 2008-11.
• UK representative on American Thoracic Society Pediatric International Relations Committee, 2011-2014.
• Lead for CF Trust Standards of Care Document 2011.
• Member London Paediatric Working Group for PbR in CF, 2011-12.
• Member BTS Specialist Advisory Group on Home Oxygen, 2008-13
• Member CF Trust Medical Advisory Committee, 2009-13.
• Member Dept. Health Paediatric Home Oxygen Service Steering Group, 2009-13.
• Paediatric representative on NHS London Clinical Oxygen group, 2011-.13.
• President Paediatric & Child Health Section Royal Society Medicine 2012-13.
• Co-chair Respiratory Group for London Paediatric Tertiary Review, 2012-13.
• Paed representative on BMA Consultants Committee specialty subcommittee, 2012-13.
• Associate Editor (Respiratory) Archives of Disease in Childhood 2007-14.
• Staff Governor (currently 2nd term), RBH NHS Foundation Trust, 2009-15.
• Member Dept. Health Clinical Group on Home Oxygen for England, 2009-15.
• Member RCPCH Council (representative of sub-specialists), 2012-16.
• Chair of Cystic Fibrosis Clinical Reference Group (member since 2012), 2015-16.
• Chair Cystic Fibrosis Group (Paediatric Assembly) of European Respiratory Society, 2014-17.
• Lead Clinician Paediatric Respiratory Medicine, Royal Brompton Hospital, 2004-8; Chair Children’s Lung Group 2008-14; Care Group Director Respiratory Paediatrics 2014-17.
• Co-Director Children’s Services, Royal Brompton Hospital, 2015-17.
• Member American Thoracic Society (ATS) Project Committee: Clinical Practice Guidelines for Long Term Oxygen Therapy in Children, 2017-8.
• Member British Thoracic Society Council, 2016-18.
• Member British Thoracic Society Science & Research committee, 2016-18.
• London Regional Advisor for Paediatric Respiratory Medicine 2000-23.
• Visiting Consultant in Paediatric Respiratory Medicine, Mater Dei (formerly St Luke’s) Hospital, Malta, 2004-22.
• Director Paediatric Cystic Fibrosis, Royal Brompton Hospital, 2009-23.
• Member Specialised Respiratory Medicine Clinical Reference Group, 2016-22.
• Member British Paediatric Respiratory Society Executive Committee, 2018-23.
• Member Vertex CF modulator therapies Interim Access Oversight Committee, 2020-23.
• Member NHSE NPOC-Internal Medicine CF steering group, 2020-23.