Grendon Prison

Grendon is a men’s prison in the village of Grendon Underwood, Buckinghamshire. It is jointly managed with Spring Hill Prison, which is on the same site.

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Book and plan your visit to Grendon

Prison visits are temporarily suspended at Grendon following local restriction tiers. We will update here as soon as this changes. There may be the opportunity for visits under exceptional compassionate reasons which should be agreed in advance with the prison prior to travel.

Find out more about visiting someone in prison during the COVID-19 pandemic. You can also follow @HMPPS on Twitter and read a rolling update page.

There are a number of other ways to contact someone in prison if you are unable to visit them. You can:

You can also contact the Prisoners’ Families Helpline on 0808 808 2003.

Keep in touch with someone at Grendon

There are several ways you can keep in touch with a resident during their time at Grendon.

Secure video calls

Secure video calling is available at this prison. Family and friends need to download the purple visits app, create an account, register all visitors, and add the prisoner to their contact list.

Read more about how it works

Phone calls

Residents do not have phones in their rooms so they will always have to call you. They have to buy phone credits to do this.

They can phone anyone named on their list of friends and family. This list is checked by security when they first arrive so it may take a few days before they are able to call.

They can make calls between 8:15am and 7:10pm Monday to Friday and between 8:15am and 5:10pm on weekends.

You can also exchange voicemails using the Prison Voicemail service.

Officers may listen to phone calls as a way of preventing crime and helping keep people safe.


You can send emails to someone in Grendon using the Email a Prisoner service.

You might also be able to attach photos and receive replies from the resident, depending on the rules at Grendon.


You can write at any time.

Include the person’s name and prisoner number on the envelope.

If you do not know their prisoner number, contact Grendon.

All post, apart from legal letters, will be opened and checked by officers.

Send money and gifts

You can use the free and fast online service to send money to someone in prison.

Gifts and parcels

Friends and family can send books to residents. Make sure to include the person’s name and prisoner number on the parcel. They will be opened and checked by officers.

It’s not possible to send any other items or property. You can send residents money instead which they can use to buy items through a catalogue system.

Life at Grendon

Life at Grendon is organised around a programme of group therapy called a ‘democratic therapeutic community’.

Residents take part in regular group meetings and activities designed to help them develop more positive relationships, take an active role within their wing, reduce their risk of re-offending and improve their psychological wellbeing.

Security and safeguarding

Every person at Grendon has a right to feel safe. The staff are responsible for their safeguarding and welfare at all times.

All safeguarding processes are overseen by the Buckinghamshire Safeguarding Adults Board.

Arrival and first night

When a resident first arrives at Grendon, they will be able to contact a family member by phone. This could be quite late in the evening, depending on the time they arrive.

They will get to speak to someone who will check how they’re feeling and ask about any immediate health and wellbeing needs.


During a resident’s first week at Grendon they will meet a range of staff who will help them with:

  • health and wellbeing, including mental and sexual health
  • any substance misuse issues, including drugs and alcohol
  • personal development in custody and on release, including skills, education and training
  • other support (sometimes called ‘interventions’), such as managing difficult emotions

Everyone also finds out about the rules, fire safety, and how things like calls and visits work.


Around 200 men live at Grendon across 6 residential units. All men get their own rooms.

Residents have access to a college, library, gym and chaplaincy.

Education and work

All residents are expected to engage in either education or employment alongside their commitment to therapy.

Learning opportunities are provided by Milton Keynes College. Qualifications are available in:

  • functional skills, including IT
  • mentoring
  • business studies
  • customer service
  • horticulture

There is a range of work throughout the prison, including cleaning duties, orderly roles, laundry, pan wash, cooking and painting.

Support for family and friends

Find out about advice and helplines for family and friends.

Support at Grendon

Grendon’s visits coordinator can provide information, guidance and support to families and friends of residents. Ask in the visitors centre to learn more.

Problems and complaints

If you have a problem contact Grendon. If you cannot resolve the problem directly, you can make a complaint to HM Prison and Probation Service.

Contact Grendon

Governor: Becky Hayward

Telephone (24 hours): 01296 445 000
Fax: 01296 445 001
Find out about call charges

Follow Grendon on Twitter


HMP Grendon
Grendon Underwood
HP18 0TL

See map

Safer custody hotline

If you have concerns about the safety or wellbeing of a man in Grendon, call the safer custody hotline.

Telephone (24 hours): 01296 445 026
Find out about call charges

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Published 7 April 2020
Last updated 21 December 2020 + show all updates
  1. Updated visit info

  2. Updated visit info

  3. Updated visiting information in line with new local restriction tiers.

  4. Updated visiting information in line with new local restriction tiers.

  5. Updated video call info

  6. added springhill covid times

  7. updated COVID visit times

  8. added survey link

  9. First published.