HM Prison Belmarsh

HM Prison Belmarsh is a high-security facility in Thamesmead with separate residential units containing single and shared cells, specialized security zones, and an attached crown court building. The complex manages different inmate categories within its secure perimeter.

The facility opened in 1991 on the grounds of a former arsenal and began operations as a Category A prison for high-security inmates. It was built to meet growing demand for secure holding capacity in the British prison system during the 1980s.

The prison maintains educational programs, physical training facilities, and rehabilitation workshops to support inmate development and reintegration into society.

Visitors must arrange visits in advance and present valid identification documents. Entry involves security procedures including searches and biometric scanning as part of standard safety protocols.

Archaeological excavations in 2009 found a 6000-year-old wooden track beneath the site. The discovery shows the land was used by people long before the modern facility was built.

Location: Royal Borough of Greenwich

Inception: 1992

Official opening: 1991

Address: HMP Belmarsh, Western Way, Thamesmead, London, SE28 0EB

Opening Hours: Monday-Friday 07:00-20:00; Saturday-Sunday 07:00-17:00

Phone: +442083314400

Website: https://gov.uk/guidance/belmarsh-prison

GPS coordinates: 51.49666,0.09327

Latest update: December 18, 2025 11:41