HMP Cardiff

Cardiff Prison

Tel: 02920 923100 – Knox Road, Cardiff, South Glamorgan CF24 0UG

Save Any Inmate At HMP Cardiff

75% On Their Calls

Prison Phone offers phone tariffs that reduce the costs of calls from Cardiff prison by up to 75%! This enables prisoners to get the support and love that they are missing from home, while reducing costs for the inmate. Find out more below.

HMP Cardiff is located in the Adamstown area of the city, and is a category B local / training prison. It houses male adults, mostly those who come from the catchment area surrounding Cardiff. The prison has been there since the Victorian era, and was built to replace Cardiff Gaol, which was deemed unable to cope with the sheer volumes of prisoners. Since its construction, the prison has undergone many improvements, though has not been without its controversy. Its capacity is currently 784. If you’d like to visit HMP Cardiff, please use the map on this page.

Tel: 02920 923100

Operational capacity: 784 as of 4th September 2008

Knox Road, Cardiff, South Glamorgan CF24 0UG

Prison Phone have been saving inmates at HMP Cardiff money on their calls from the prison to any UK mobile phone since 2013.

We do this by allocating a dedicated and secure local number to your mobile phone, this means when the inmate at Cardiff prison calls the new local number we have provided they will be charged at just the local landline rate (around 10p per minute) rather than the standard mobile rate (which is around 40p per minute).

This in turn helps to stretch the inmates PINS phone credit further and reduces the amount you need to send in for them to top up!

To open an account in less than 3 minutes please use the button below!


GET AN ACCOUNT IN UNDER 3 MINUTESSee how much the inmate can save

Send me Cardiff prison details via FREE SMS

Here's some facts about Cardiff prison

Did you know?

HMP Cardiff is a category B prison in Cardiff, south Wales. Opened in 1832, the prison is in Adamsdown, Cardiff and can hold 784 male prisoners.

A total of 20 executions took place at HMP Cardiff, the last being 28 year old Mahmood Mattan on the 3 September 1952. He was wrongly accused of the murder of Lily Vorpet, and was sentenced to death by hanging. His case was quashed in September 1998, and the family were awarded £725,000, the first award to a family after a person was wrongfully hanged.

A group of four men were recently arrested after a homemade bomb made out of tea whiteners erupted in HM Prison Cardiff. Bethhan Jenkins said ‘That was very concerning to them as staff”.

To view the latest inspection report, click here.

Monday to Friday visits are 13:30 – 14:30 & 14:45 – 15:45. Saturday visits are  09:45 – 10:45 & 13:30 – 14:30. Sunday visits are 13:30 – 15:00.

  • Keith Allen spent time here as a remand inmate

    Cardiff latest facts 2
  • HMP Cardiff is home to the number 1 rated restaurant in the capital, provided by The Clink.

    Cardiff latest facts 1
  • HMP Cardiff came under considerable criticism in 1997, when it was discovered that they were chaining sick prisoners to their beds.

    Cardiff prison Fact 3
  • Mahmood Mattan, executed in 1952 for murder, was later found to have been wrongly convicted. His remains were moved to the Muslim section of the Western Cemetery, Cardiff; and his gravestone reads ‘Killed by Injustice’

    Cardiff prison Fact 2
  • 20 executions have taken place at HMP Cardiff. All those who were executed were buried in unmarked graves within the prison grounds.

    Cardiff prison Fact 1


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