HMP Grendon
HMP Grendon is a Category B therapeutic prison for men in Grendon Underwood.
Christmas: visitor list by Mon 30 NovGrendon Underwood, Buckinghamshire, HP18 0TL
01296 445 000How long things take at Grendon
CommunityFrom families
Typical wait from five or more families. Fewer than five and you see the count, not a guess. How we check · Add yours
Nearest prison with reports: HMP Bullingdon · 31 reports · 5 miles
Latest from families
Community
Notes that might name someone are read by a person before they show. Numbers, links and abuse are turned away. The waits stay up either way. How we check
Know another family at Grendon?
Send on WhatsAppChristmas at Grendon
prisoncheckMonday 30 November: Get on their visitor list
in 31 daysIt can take up to 2 weeks, then book.
Monday 21 December: Last day to send money
Thursday 24 December: Release if due out 25–28 Dec
What has Grendon told you about Christmas visits?
CommunityOne tap, no names. It helps the next family.
Still waiting?
Track your wait. We’ll tell you when most families at Grendon had heard back.
Start trackingHelp the next family
Question 1 of 3
How long did the PIN take at Grendon?
One tap, no names. It helps the next family.
Someone to talk to
OfficialPhones
OfficialVisits
OfficialMoney and parcels
OfficialRelease
OfficialAbout Grendon
OfficialWho to email at Grendon. Official inboxes. Not Email a Prisoner.
GOV.UK · Last checked: 12 August 2026Questions families ask about Grendon
Someone has just gone to Grendon. What happens first?
Reception often allows a short first-night call. After that, they add your number to their PIN phone list, and you go on their visitor list before you can book a visit.
Someone has just gone to prisonHow long does the PIN take at Grendon?
There is no firm figure for Grendon yet. Families at similar prisons in South East say about 6 days.
The PIN wait at GrendonHow long until the first call from Grendon?
There is no firm figure for Grendon yet. Families at similar prisons in South East say about 2 days.
The first call from GrendonHow long until the first visit at Grendon?
There is no firm figure for Grendon yet. Families at similar prisons in South East say about 10 days.
The first visit at GrendonWhen can I visit Grendon?
They add you to their visitor list first, which can take up to 2 weeks. Then book on 01296 445 243. Bring photo ID that has not expired.
Visiting times at GrendonHow much do calls from Grendon cost?
They pay 5.5p a minute to call a mobile and 2.48p to a landline on weekdays. Calls come out of their phone credit, not yours.
Call costs at GrendonHow do I send money to someone in Grendon?
Online with GOV.UK’s Send money to someone in prison. It is free and the only way. You need their name, date of birth and prisoner number.
Money at GrendonWhat time are people released from Grendon?
Families usually collect in the morning. No gate time reported here yet. Only the prison can confirm the date.
When do they get out?