World Prisons
All prisons

United Kingdom · Wales · Cardiff

HMP Cardiff

LocalHighmaleLowHigh
Verified · Data dated
Aging · 5mo ago
Sources last reviewed on · data-as-of

Data is aggregated from public sources and may be incomplete or out of date. Always verify with primary sources before acting on any figure. See data sources.

For families

How to send mail, money, and visit HMP Cardiff

Step-by-step guidance using the United Kingdom system — addresses, money services, visit booking, what to bring on your first visit.

Open toolkit
Photograph of HMP Cardiff

Gallery

From Wikimedia Commons (CC-BY-SA where not otherwise stated).

  • Cardiff Prison-4990092 1bc6034b.jpg

    Photo by Richard Sutcliffe via Wikimedia Commons (CC BY-SA 2.0)

  • Cardiff Prison.jpg

    Photo by Robin Drayton via Wikimedia Commons (CC BY-SA 2.0)

  • Cardiff Queen Street railway station MMB 12 HMP Cardiff.jpg

    Photo by mattbuck (category) via Wikimedia Commons (CC BY-SA 3.0)

  • Cardiff Queen Street station and HM Prison Cardiff (geograph 4989990).jpg

    Photo by Richard Sutcliffe via Wikimedia Commons (CC BY-SA 2.0)

  • H M Prison, Cardiff - geograph.org.uk - 7011013.jpg

    Photo by Eirian Evans via Wikimedia Commons (CC BY-SA 2.0)

  • HM Prison Cardiff 4989990 da064665.jpg

    Photo by Richard Sutcliffe via Wikimedia Commons (CC BY-SA 2.0)

  • Road sign, Windsor Road, Cardiff.jpg

    Photo by Dominic Nelson via Wikimedia Commons (CC BY-SA 4.0)

UK Local prison operated by HM Prison & Probation Service. Listed in the GOV.UK Find a prison directory.

Background

HM Prison Cardiff (Welsh: Carchar Caerdydd EF) is a Category B men's prison, located in the Adamsdown area of Cardiff, Wales. The prison is operated by His Majesty's Prison Service.

Source: Wikipedia article lead, CC-BY-SA.

Capacity

820

Current population

—

Occupancy

—

Year opened

1832

Operational

Figures from official sources · verified 29 May 2026 · methodology

Facility profile

Population held

male

Opened

1832

Region

Wales

Security level

High

Death-row facility

No

Conditions

unsentenced population and many prisoners were recalled, which contributed to a rapid turnover of population. Men were held in a mix of accommodation types: receiving men from the streets and managing considerable day-to-day risk. inspected the prison in 2019, when we reported outcomes that were reasonably deterioration in the provision of purposeful activity, we judged outcomes to be prisons against most safety measures. Violence, for example, was relatively low who were self-isolating, and use of force by staff had fallen.

Visiting

Visits booked online via the GOV.UK Prison Visits Booking service. Photo ID required. Visit frequency varies by the inmate's IEP level.

Mailing

Good quality staff-prisoner relationships underpinned a respectful culture. Staff

Practical info

Cardiff is a category B reception and resettlement prison, which at the time of deterioration in the provision of purposeful activity, we judged outcomes to be and the prison was working hard to reduce it further. We found no prisoners the prison. However, there was evidence to suggest the prison was working these qualities were not reflected in the delivery of key work, which was weak. identified as a priority.

Known issues

prisons against most safety measures. Violence, for example, was relatively low they thought drugs were easy to access, and this was confirmed by mandatory testing which suggested about a quarter of all prisoners were active drug users

Contact & address

HMP Cardiff Knox Road Cardiff CF24 0UG See map Help us to improve this page. Give us your feedback in this 2-minute survey ., Cardiff CF24 0UG

Conditions Risk Score

Derived signal — not a judgement. How it's calculated

11/100
Low concern11/100
Overcrowding
0/30
Oversight reports
6/30
Structural flags
5/15
Death signals
0/15
Conditions text
0/10

What the score is responding to:

  • · 1 oversight report in the last 5 years
  • · Substantial documented known-issues record

This facility scores 11. The national average across 584 scored United Kingdom facilities is 4 — 7 points above national average.

Related facilities

All in United Kingdom →

Same country, matched on type + security level where possible.

Compared to other facilities in United Kingdom

583 peers
Conditions risk scorethis: 0/100 · peers avg: 4/100 (100%)

Higher risk than 0% of peer facilities in United Kingdom.

Capacity (beds)this: 820 · peers avg: 569 (+44%)

Reports

  • HMIP8 May 2024

    Cardiff is a category B reception and resettlement prison, which at the time of our inspection, was holding 737 prisoners. It had a significant remand and unsentenced population and many prisoners were recalled, which contributed to a rapid turnover of population. Men were held in a mix of accommodation types: some of these dated from the early 19th century, while others were added in the late 1990s. The location, character and structure of the prison, as well as the operational challenges it faced, meant Cardiff was a frontline institution, receiving men from the streets and managing considerable day-to-day risk. It is all the more pleasing therefore, to report that, despite these challenges, Cardiff was doing significantly better than comparable institutions. We last inspected the prison in 2019, when we reported outcomes that were reasonably good or better in all of our healthy prison tests. At this inspection, despite some deterioration in the provision of purposeful activity, we judged outcomes to be reasonably good against all four tests. The prison was calm and settled, and although a quarter of prisoners in our survey told us they felt unsafe, Cardiff was performing better than similar prisons against most safety measures. Violence, for example, was relatively low and the prison was working hard to reduce it further. We found no prisoners who were self-isolating, and use of force by staff had fallen. There were, however, some exceptions to these trends. Forty per cent of prisoners told us they thought drugs were easy to access, and this was confirmed by mandatory testing which suggested about a quarter of all prisoners were active drug users at the time of the inspection. Since 2019, 10 men had taken their own lives in the prison. However, there was evidence to suggest the prison was working hard to improve this situation, and there had been a fall of 38% in the number of men harming themselves. Good quality staff-prisoner relationships underpinned a respectful culture. Staff appeared competent and consistent in their dealings with prisoners, although these qualities were not reflected in the delivery of key work, which was weak. The prison was very overcrowded, but despite the age of many of the buildings standards and cleanliness were good. Access to amenities and services was reasonable, and consultation with prisoners and procedures to facilitate redress were generally effective. Although outcomes remained mixed for different protected characteristic groups, the promotion of fair treatment had been identified as a priority. Work to better understand the needs of young adults was encouraging. During our spot checks we found about 28% of prisoners locked in their cells during the working day. Although time unlocked was not as good as in 2019, it was better and more consistently delivered than at most comparable prisons. Our colleagues in Estyn assessed education, skills and work provision as ‘good’. There was effective work to promote family ties, assess risk of harm, deliver interventions, and manage sentences and public protection, but improvements to key work would have enhanced provision significantly. Resettlement services needed to be improved and better coordinated. This is an encouraging report on a competent prison, which sets something of a benchmark for this type of establishment. The governor and her senior team were visible, approachable and set clear standards. The active support and supervision officers received was reflected in their confidence as a group and the sense of order in the prison. Prisoners were treated respectfully and they trusted staff because they were reliable. While there was much to do, we had every confidence that the reasonable outcomes we observed were embedded and could be maintained, and that the governor’s ambitions for further improvement could be achieved. Charlie Taylor HM Chief Inspector of Prisons

    source

Data completeness

94%

How many of our profile fields are populated. We surface this so families and researchers know the limits.

Sources

Cite this page

Under CC-BY-4.0. Include the URL and access date; the site is a living reference and entries can change.

APA
World Prisons. (2026). HMP Cardiff. Retrieved October 20, 2026, from https://worldprisons.com/prisons/hmp-cardiff
Chicago
"HMP Cardiff." World Prisons. Accessed October 20, 2026. https://worldprisons.com/prisons/hmp-cardiff.
BibTeX
@misc{worldprisons-hmp-cardiff,
  author = {{World Prisons}},
  title = {HMP Cardiff},
  year = {2026},
  url = {https://worldprisons.com/prisons/hmp-cardiff},
  urldate = {2026-10-20}
}