Barnes Hospital, London  Barnes Hospital, on South Worple Way, East Sheen, in the London Borough of Richmond upon Thames, is a hospital managed by South West London and St George's Mental Health NHS Trust. It provides community and inpatient mental health services. The hospital was opened in 1889 as The Barnes Isolation Hospital. Its original purpose was to treat and care for patients with infectious diseases such as diphtheria and scarlet fever. The existing buildings were extensively renovated in 2001 when a new extension was added.