Long Grove Hospital, formerly Long Grove Asylum was a mental hospital, part of the Epsom Cluster of hospitals in Epsom, Surrey in the United Kingdom.
The hospital was built for the London County Council and opened in 1906. It was the third to follow architect George Thomas Hine's (Bexley) plan for accommodation for 2,000 patients. The re-use of an existing plan allowed the LCC to pass the plans through the development stage and approval by the Commissioners in Lunacy faster than a new plan.
At the peak of construction activity on the Long Grove site in 1905 about 1,100 men were employed, around 900 of them recruited from the London unemployed and brought down from Waterloo daily in special trains, half their 4 shilling (20 pence) return fare being paid by building contractor Forster & Dicksee.
The Horton Light Railway was constructed to transport building materials to the site and was later used to transport hospital supplies to Long Grove and the other hospitals on the estate.
The central axis of service buildings included the administration block, recreation hall with flanking male and female staff blocks, kitchens and main store. As usual for the time, gender-specific workplaces such as the laundry, workshops and boiler house were located on the side corresponding to their respective workforces. A large arc of corridor linked all wards, with radiating corridors making the entire main complex easily accessible. Parole and infirmary blocks were situated within the grounds, as was a detached chapel, senior staff and official's housing and an isolation hospital.
Between c.1944 and 1992 at least 43 female typhoid carriers were held at Long Grove in a secure isolation unit without parole. All of the women came from the London area and despite having recovered from the disease were deemed a public health risk as they still hosted and excreted the bacteria.
Hospital staff were made to undergo decontamination on entering and leaving the ward and wore masks and surgical gowns at all times. All toilets in the unit were flushed using boiling water to minimise the risk of infection. It is believed that the women were detained even after the advent of antibiotic treatments in the 1950s, due to the state of their mental health, which may have deteriorated partly as a result of their incarceration.