Jim Moss was head of the department of orthodontics at University College London Dental School and a leading figure in British orthodontics and the international orthodontic community. He was born on 29 May 1933, one of five children of Percy Randolph Moss, a butcher, and Margaret Moss née Hollands and brought up in north London. He attended Preston Manor County School, Wembley, where he was head boy. He entered University College Dental School and qualified in 1956. He joined the orthodontic department at University College and worked under Willy Grossman, a refugee from Prague and a world authority on functional jaw orthopaedics. Jim progressed through the department as registrar, senior registrar, senior lecturer and consultant, finally becoming professor and head of the orthodontic department when Grossman retired in 1984. When the University College London Dental School closed in 1990, he joined the orthodontic department at the Royal London Hospital until his retirement in January 2004. Jim devoted almost all his professional life to supporting the British Society for the Study of Orthodontics (BSSO), which he joined in 1964. He was its treasurer from 1971 to 1979, president in 1980 and its editor and curator until 1994, when the British Orthodontic Society was founded. He remained a curator for the Society until his death. Jim was the Northcroft lecturer of the BSSO in 1987, was granted a BSSO special service award and elected to life membership of the British Orthodontic Society. Jim lectured widely throughout the world and was the John Valentine Mershon Memorial lecturer of the American Association of Orthodontists (AAO) in 1974 and 1984. In 2004 he received the AAO Louise Ada Jarabek Memorial International Orthodontic Teachers and Research Award. Jim was a member of the board of the Faculty of Dental Surgery of the Royal College of Surgeons of England from 1984 to 1998, during which time he served as chairman of its postgraduate education committee and its examinations committee in orthodontics. He was elected as the vice dean of the Faculty of Dental Surgery in 1994. He was the College’s Charles Tomes lecturer in 1985 and the T C White lecturer of the Royal College of Physicians and Surgeons of Glasgow in 1989. Jim Moss was instrumental in furthering knowledge of the Begg technique in Britain and established the UK Begg Study Group, based at the University College London Dental School in the early 1970s. Jim was also a very active member of the European Begg Society of Orthodontics and was later its president. In 1986, following the publication of the UK’s Schanschieff Report into unnecessary dental treatment, Jim agreed to chair the UK’s Occlusal Index Committee. As a result of its work, the Government provided funding to develop the IOTN (index of treatment need) and PAR (peer assessment rating) indices, which was now used to justify and evaluate NHS orthodontic practice throughout the UK. However, Jim Moss will perhaps be best remembered for his longstanding commitment to the European Orthodontic Society (EOS), which he joined in 1964. He was its honorary secretary from 1984 to 2001 and was elected EOS president in 1996. During his leadership the Society flourished and expanded. Membership from former Soviet Bloc countries was encouraged and delegates and speakers from all over the world went to the EOS Congress. His wife Mary was immensely supportive of this work and was frequently by his side at EOS meetings. (Jim appeared at an EOS competition in Brighton dressed as King Henry VIII and Mary was his queen.) Jim went on to help set up the European Board of Orthodontists, which was established in 1996 and was both its secretary and an examiner. He was also instrumental in involving the European national societies in the EOS and set up the Forum of National Societies in 1998 with representatives from European Federation of Orthodontic Specialist Associations. Jim gave the EOS Sheldon Friel Memorial lecture in 2002, the year in which he was made an honorary member of the Society. Jim Moss became a fellow of the World Federation of Orthodontists, which was established in 1996 and became an honorary member in 2005 in recognition for his outstanding service to orthodontics. He was due to receive an award for his services at the EOS Congress in June 2010 in Slovenia. Unfortunately, he was by this time too unwell to attend, and his award was presented to his family at Jim’s memorial service at High Barnet Baptist Church, where he had been a preacher, organist and teacher. The bedrock of Jim’s life was his beloved wife Mary (née Evans), and Jim devoted the last years of his life to caring for her during a prolonged terminal illness. Jim died on 14 June 2010 at the age of 77 and was survived by his three children, Richard, Elizabeth and Tim.