David Black has been appointed medical director of Queen Mary's Sidcup trust, where he has been a consultant physician and geriatrician for the past 10 years. Dr Black was also previously clinical director of the adult medicine directorate and a part-time operations manager at the trust.

Ian Coulton has been appointed chief ambulance officer of North Yorkshire Ambulance Service trust. He has been acting chief executive since November 1996 and was previously personnel and planning director.

South Downs Health trust has appointed John O'Sullivan as finance director. Mr O'Sullivan has been acting finance director since last year and was previously assistant finance director at South Thames regional office.

East Anglian Ambulance trust has appointed retired chartered surveyor Andrew Egerton-Smith as chair. He is a former trustee and chair of the Garden House Hospice, Letchworth, and was chief executive of Letchworth Garden City Corporation for 10 years. Geoffrey Maeer, who was acting chair of the trust from January to October 1997, has been reappointed as a non- executive director for three years.

Careers consultant Gwen Clark has been appointed non-executive director of United Bristol Healthcare trust. A committee member of the Institute of Directors, Ms Clark is also involved in community activities with the Salvation Army in Bristol.

Oxfordshire Community Health trust has appointed Christine Simm as non- executive director. A former Oxford City Labour councillor, Ms Simm is co-ordinator of the Donnington Doorstep Family Centre in Oxford.

June Hawley has been appointed non-executive director of the Doncaster Royal Infirmary & Montagu Hospital trust. Ms Hawley is a Labour Party councillor. She has been a member of Doncaster community health council since 1987 and also served on Doncaster health authority.

Gateshead Healthcare trust has appointed local Labour councillors Malcolm Graham and Minnie Robson as non-executive directors. Peter Smith has been reappointed as chair and Malcolm Scott as vice-chair of the trust.

Two non-executive directors have been re-appointed at Great Ormond Street Hospital for Children trust. Roger Horn, a chartered surveyor, and Roland Levinsky, dean of the Institute of Child Health, the hospital's research partner, have had their terms extended by six months and four years respectively.