Broadmoor Hospital is a high-security psychiatric hospital in Crowthorne, Berkshire, England. It is the oldest of England's three high-security psychiatric hospitals, the other two being Ashworth Hospital near Liverpool and Rampton Secure Hospital in Nottinghamshire. The hospital's catchment area consists of four National Health Service regions: London, Eastern, South East and South West. It is managed by the West London NHS Trust.

Ashworth Hospital is a high-security psychiatric hospital in Maghull, 10 miles (16 km) northeast of Liverpool. It is a part of Mersey Care NHS Foundation Trust, catering to patients with psychiatric health needs that require treatment in conditions of high security.