HM Prison Grendon

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HMP Grendon
Location Grendon Underwood, Buckinghamshire
Security class Adult Male/Category B
Population 235 (as of January 2006)
Opened 1962
Managed by HM Prison Services
Governor Dr Jamie Bennett
Website Grendon at

HM Prison Grendon is a Category B men's prison, located in the village of Grendon Underwood, in Buckinghamshire, England. The prison is operated by Her Majesty's Prison Service, and is jointly managed with HMP Spring Hill which is situated next to Grendon.


Opened in 1962, Grendon was initially used as an experimental psychiatric prison and psychiatric unit for prisoners with antisocial personality disorders. It developed into a therapeutic community (tc) prison based upon principles established at the Henderson Hospital in London. There are five, sometimes six discrete therapeutic communities, each with over 40 resident prisoners. In 2014, a small tc opened for prisoners with learning disabilities who had previously been excluded from treatment. This 'TC+' was modelled on similar projects begun the previous year at Dovegate and Gartree Prisons.

Grendon has been one of the most researched forensic establishments in the world and has established standards for good relationships between staff and residents, and low levels of violence and self-harm. Research studies have shown lower levels of reoffending for men who stay longer than eighteen months.

Over the years, Grendon has slowly evolved into a mainstream prison with a standard regime. However the prison is the United Kingdom's only therapeutic prison community for the treatment of serious sex offenders and violent offenders.

Three prisoners escaped from Grendon in October 2001. The three inmates (two of whom were serving life sentences for murder) were recaptured days later.[1]

A prisoner at Grendon serving 18 years for robbery escaped in June 2003 while at the John Radcliffe Hospital for treatment.[2]

In October 2006 another prisoner escaped whilst returning to Grendon. The inmate had been released on a temporary licence, and was being driven back to the prison by officers, when he jumped out of the moving car on to a motorway, and escaped.[3]

The prison today[edit]

HMP Grendon, Bucks - crop.jpg

Grendon Prison holds category B & C adult male prisoners in England & Wales. Each the six wings of the prison is a therapeutic community which operates autonomously. Based on therapeutic community principles, the therapeutic programmes of the prison include teams of doctors, psychiatric nurses, counsellors and prison officers who work with inmates individually and in groups to promote rehabilitation and tackle reoffending.

Grendon Prison has a visits centre, which has been awarded a Charter Mark for its facilities. These include an inside children's playroom and an outside play area, a baby changing room, toilets, and a canteen.


  1. ^ "ENGLAND | Three escaped convicts captured". BBC News. 2001-10-01. Retrieved 2012-08-07. 
  2. ^ "UK | England | Oxfordshire | Search for escaped prisoner". BBC News. 2003-06-26. Retrieved 2012-08-07. 
  3. ^ "UK | England | Manchester | Prisoner escapes from moving car". BBC News. 2006-10-04. Retrieved 2012-08-07. 

External links[edit]

Coordinates: 51°53′35″N 1°00′21″W / 51.8931°N 1.0059°W / 51.8931; -1.0059