1984 Researched, planned, developed and delivered first national conference “Children with Tracheostomy”. Institute of Child Health.
1986 Course for Aid for Children with Tracheostomy.
1988 National SIG (Cleft Palate) annual meeting, LondonBusinessSchool.
1989 Mars M. Sell D. British Council Course Facial Deformity: A Multidisciplinary Team Approach, LondonBusinessSchool.
1993 Sell D. Harding A. Postgraduate Speech and Language Therapy Course: Approaches to Structural Speech Disorders,InstituteofChildHealth.
1996 Annual 3 day residential conference of the Craniofacial Society of GB, Royal Holloway, Egham.
1997 Jointly organised international course by Professor Shprintzen on State of the Art in Clefting/Craniofacial Anomalies.
1998 Initiated, planned, developed and delivered course for postgraduate speech and language therapists: Cleft Palate/Palatal Anomalies Course.InstituteofChild Healthon an annual basis until 2001.
2001 Joint delivery of day’s course to SLTs Trent Region on Cleft palate/Velopharyngeal Anomalies
2001 Invited to undertake a day’s training for postgraduate SLTs in the North East Region on Velopharyngeal Dysfunction.
2002 Joint Organiser of the first national multidisciplinary Prosthetics Course for speech problems associated with velopharyngeal dysfunction. Repeated 2003.
2003 Contributor to the National SIG Cleft Palate/Velopharyngeal Insufficiency Course, Southern Ireland,Cork.
2003- Annual contributor to the Postgraduate National Course, Homerton,Cambridge. VPI , and in its new locationSheffieldUniversity.
2003 Joint organiser of 2 day postgraduate course on Communication and feeding in Complex Cleft and Craniofacial Anomalies, ICH.
2004, 2006 Joint organiser International Workshop for Cleft Lip and Palate Teams.Institute of Child Health.
2005, 2009 Jointly initiated planned and organised national training programme on cleft speech analysis tool CAPSA
2007 Initiated, planned and organised first national endoscopy training course for speech and velopharyngeal function,Institute of Child Health
2009 , 2010 Research and Audit in a Clinical Setting. UCL.
2009 Invited talk Bristol Dental School. An Overview of Cleft Palate Speech and Current Issues.
2009 Invited talk Communication Therapists International. The Sri Lankan Project 1984 – 2009.
2010 National and International Perspectives of Cleft Palate and Velopharyngeal Dysfunction. The Good, the Bad and the Challenges! City University.
2011 Speech Assessment and Management Pan Thames Plastic Surgery Training Course, UCL Institute of Child Health.
Many miscellaneous postgraduate lectures, teaching sessions within the profession and to multidisciplinary groups at regional and local level (e.g. Somerset, Manchester, Nottingham, Peterborough, London, Cardiff, North Wales, Reading, Winchester, Hastings, Essex, Newcastle, Cleft Lip and Palate Association, London, North Thames)