| 1. | World Innovation Summit for Health (WISH), 12 – 14 Nov 2018, Qatar, Doha |
| 2. | World Innovation Summit for Health (WISH), 28 Nov – 2 Dec 2016, Qatar, Doha |
| 3. | Fourth International Pediatric Transplant Congress, 17-21 March 2007, Cancun, Mexico – Chairperson for the session on liver transplantation. |
| 4. | Third International Pediatric Transplant Congress, 5-8 August 2005, Innsbruck, Austria – Chairperson for the session on transplantation in the developing world. |
| 5. | Conference of Asian Society of Transplantation, 25-26 September 2003, Kuala Lampur, Malaysia. |
| 6. | Second International Pediatric Transplant Congress, 4-8 April 2003, Rio de Janerio, Brazil. |
| 7. | 35th Meeting of ESPGHAN, 4 -7 June 2002, Sicily, Italy. |
| 8. | Masterclass in Pediatric endoscopy, 28-30 November 2001, London, UK. |
| 9. | VII Asian Pan Pacific Society of Pediatric Gastroenterology and Nutrition Congress, 21-24 April 2001, Cairns, Australia. |
| 10. | First World Congress of Pediatric Gastroenterology, Hepatology and Nutrition, 5-7 August 2000, Boston, USA – Chairperson for the session on liver transplantation. |
| 11. | V Combined ESPGHAN and NASPGN Meeting, 27-30 May 1998, Toulouse, France. |
| 12. | United European Gastroenterology Week, 18-23 October 1997, Birmingham, UK. |
| 13. | IV Commonwealth Conference on Diarrhoea and Malnutrition, 21-24 November 1997, Karachi, Pakistan. |
| 14. | Transplantation '97 - Improving Organ Donation and Optimizing Outcome, 19-21 June 1997, Birmingham, UK. |
| 15. | Digestive Diseases Week, 10-16 May 1997, Washington D.C., USA. |
| 16. | First Meeting of the Royal College of Pediatrics and Child Health, 15-17 April 1997, York, UK |
| 17. | Seventh Annual Course in Pediatric Gastroenterology and Immunology, 9-11 December 1996, London, UK. |
| 18. | Second Course in Endoscopic Ligation of Oesophageal Varices, 3 December 1996, Edinburgh, UK. |
| 19. | Course in Therapeutic Endoscopy, 22 November 1996, Liverpool, UK. |
| 20. | British Society of Pediatric Gastroenterology and Nutrition Trainee Symposium 21/22 October 1996, Usk, Wales. |
| 21. | Postgraduate Course in Endoscopy organized by the British Society of Gastroenterology, 16 September 1996, Manchester, UK. |
| 22. | Sir Leonard Parsons Symposium, 26 April 1996, Birmingham, UK. |
| 23. | The annual meeting of the British Pediatric Association and the British Society of Pediatric Gastroenterology and Nutrition, 16 April 1996, York, UK |
| 24. | III Commonwealth Conference on Diarrhoea and Malnutrition, 11-14 November 1994, Hong Kong. |
