Great Ormond Street Hospital for Children

Great Ormond Street Hospital is a children's hospital located in the Bloomsbury area of the London Borough of Camden, and a part of Great Ormond Street Hospital for Children NHS Foundation Trust.

The hospital is the largest centre for child heart surgery in the UK and one of the largest centres for heart transplantation in the world. In 1962 they developed the first heart and lung bypass machine for children. With children's book author Roald Dahl, they developed an improved shunt valve for children with hydrocephalus, and non-invasive heart valve replacements.