The four 'mini-prisons' announced by the Ministry of Justice will hold a total of 1,260 prisoners.
Under the plans, the 'houseblocks' will be built at HMPs Parc in Bridgend, Peterborough in Cambridgeshire, The Mount in Hertfordshire and Thameside in London.
Six prisons in England will close, along with sections of three others.
Justice Secretary Chris Grayling says the plans will "bring down the cost" of operating the prison system, with the target of saving £63m annually.
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Catch up with the latest episode of Coast & Country where Andrew meets the sleddog racing team and Ruth goes weather watching in Snowdonia.
What a week it's been! We started with exceptionally warm temperatures, braved Doris and now it looks like we're in for a wet weekend!
Cardiff manager Neil Warnock has agreed to stay on at the City Stadium, whilst Swansea boss Paul Clement prepares for a return to Chelsea.