Staff A-Z

Great Ormond Street Hospital has a dedicated and tireless workforce looking after the care requirements of our patients. If you would like to locate a member of staff or find out information about their clinical specialty please use our search below.

Martin Kostolny

Mr Martin Kostolny trained at the Heart Centre in Bratislava, Slovakia under Prof. Hraska and at the German Heart Centre Munich, Germany under Prof. Lange. In 2003 he spent a year as senior registrar at GOSH with Prof. deLeval, Prof. Tsang and Prof. Elliott.

Gwynneth Down

Dr Gwynneth Down is a Consultant Family Psychotherapist. She is the Head of Family Psychotherapy across the Department of Child and Adolescent Mental Health and Psychosocial Services.

Dasha Nicholls

Dr Dasha Nicholls is an expert in feeding and eating disorders. She first started working at Great Ormond Street Hospital in 1995. She is Consultant Child and Adolescent Psychiatrist and Joint Head of the Feeding and Eating Disorders Service and Honorary Senior Lecturer at the Institute of Child Health, University College London. She is currently clinical lead for the Eating Disorders Team.

Rachel Bryant-Waugh

Dr Rachel Bryant-Waugh is a Consultant Clinical Psychologist. She has worked at Great Ormond Street Hospital for 20 years, 17 as a qualified psychologist, now as Joint Head of the Feeding and Eating Disorders Service and Lead Psychologist in the Department of Child and Adolescent Mental Health (DCAMH).