Nine new prisons will open in Wales and England – five – under plans to close Victorian jails and offer them for housing, the government has said.
About 10,000 offenders will be transferred to the new associations in an attempt to save an estimated GBP80m a year.
The move will form part of Chancellor George Osborne’s spending review due on 25 November.
It will make the nation’s prison system “fit for purpose in the 21st Century”, the Treasury said.
Along with the nine new jails, a brand new prison is being built in Wrexham and growths are happening at of HMP Stocken, in HMP Rye Hill, and Rutland .