On its closure in 1970, the RAF base was briefly converted into a transit camp for Ugandan refugees.

An investigation by the Board revealed that many inmates were forced to share single cells, and healthcare was not up to standard at the jail.

The report also criticised the lack of training opportunities for inmates and low morale among staff at the prison.

Workshops include tailoring, welding and fabrication, private sector contract services and an outdoor market garden.

A staffed visits centre opens at Highpoint South at lunch time for refreshments and facilities.