HM Prison Grendon is a
Category B men's prison, located near the village of
Grendon Underwood
Grendon Underwood is a village and civil parish in west Buckinghamshire, England, near the border with Oxfordshire. The village sits between Woodham, Buckinghamshire, Woodham and Edgcott, near the Roman road Akeman Street (now part of the A41 roa ...
, in
Buckinghamshire
Buckinghamshire (), abbreviated Bucks, is a ceremonial county in South East England that borders Greater London to the south-east, Berkshire to the south, Oxfordshire to the west, Northamptonshire to the north, Bedfordshire to the north-eas ...
, England. The prison is operated by
His Majesty's Prison Service
His Majesty's Prison Service (HMPS) is a part of HM Prison and Probation Service (formerly the National Offender Management Service), which is the part of His Majesty's Government charged with managing most of the prisons within England and Wal ...
, and is jointly managed with
HMP Spring Hill which is situated next to Grendon.
History
Opened in 1962, Grendon was initially used as an experimental
psychiatric
Psychiatry is the medical specialty devoted to the diagnosis, prevention, and treatment of mental disorders. These include various maladaptations related to mood, behaviour, cognition, and perceptions. See glossary of psychiatry.
Initial psyc ...
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 Henderson may refer to:
People
* Henderson (surname), description of the surname, and a list of people with the surname
* Clan Henderson, a Scottish clan
Places Argentina
* Henderson, Buenos Aires
Australia
* Henderson, Western Australia
Canada ...
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 Prison
HM Prison Gartree is a Category B men's prison, located in Market Harborough, Leicestershire, England. Gartree is operated by His Majesty's Prison Service.
History
Constructed on the western part of the site which was previously RAF Market Harb ...
s.
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.
A prisoner escaped in 1992 while on a planned camping event.
Three prisoners
escaped from Grendon in October 2001. The three inmates (two of whom were serving life sentences for murder) were recaptured days later.
A prisoner at Grendon serving 18 years for robbery escaped in June 2003 while at the
John Radcliffe Hospital
The John Radcliffe Hospital (informally known as the JR) is a large tertiary teaching hospital in Oxford, England. It forms part of the Oxford University Hospitals NHS Foundation Trust and is named after John Radcliffe, an 18th-century physic ...
for treatment.
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.
The prison today

Grendon Prison holds category B & C adult male prisoners in England & Wales. Each of 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 nurse
Psychiatric nursing or mental health nursing is the appointed position of a nurse that specialises in mental health, and cares for people of all ages experiencing mental illnesses or distress. These include: neurodevelopmental disorders, schizoph ...
s,
counsellors and prison officers who work with inmates individually and in groups to promote rehabilitation and tackle reoffending.
Democratic Therapeutic Communities provide group-based therapy within a social climate which promotes positive relationships, personal responsibility and social participation. Therapeutic Communities address a range of offender needs including interpersonal relationships, emotional regulation, self-management and psychological wellbeing.
HMP Grendon provides group therapy and structured community living where members are encouraged to have shared responsibility for day to day decision-making and problem solving. TC intervention centres on addressing the risk factors and offending behaviour needs that inevitably emerge in this environment.
Key features of TCs include
* daily group or community meetings
* the use of community activities to promote skill development and generalisation, e.g. work assignments, delegated responsibilities, organising events, involvement in prisoner/staff committees
* staff supporting the community in democratic decision-making and providing pro social role models
* staff and prisoners challenging and giving feedback about behaviour that is anti-social or linked to offending behaviour patterns.
Reception criteria
The basic referral criteria includes:
* Cat B or C
* Has more than 18 months to serve
* Has been off Category A or escape list for at least six months
* Meets “drug-free” criteria (no positive drug tests within two months of referral)
* Scoring 25 or above on the Hare Psychopathy Checklist
* Comprehension of rules/signs compact
* Accepts responsibility for/is not appealing against offence
* Meets self-harm criteria (no self-harm within two months of referral)
There is clear evidence that the therapeutic community approach is effective.
Research shows that the institutional behaviour of prisoners improves including reduced adjudications and acts of self-harm. Surveys of staff and prisoners also show that they both report higher quality of life than in comparable establishments. In addition, there is research evidence that they reduce the risk of reoffending for those who remain in treatment for at least 18 months.
Grendon Prison has a visits centre, which has been awarded a
Charter Mark
The Customer Service Excellence, (previously the "Charter Mark") is an accreditation for organisations, intended to indicate an independent validation of achievement.
History
The Charter Mark was an award demonstrating the achievement of ''nationa ...
for its facilities. These include an inside children's playroom and an outside play area, a baby changing room, toilets, and a canteen.
References
External links
Ministry of Justice pages on GrendonHMP Grendon – HM Inspectorate of Prisons Reports
Further reading
*
{{Authority control
Grendon
Grendon
Grendon
1962 establishments in England
Psychiatric prisons
Grendon