It's been confirmed that Dorchester Prison is to close and discussions are underway to end the lease at Dartmoor Prison.
Elsewhere, Portland's Verne Prison will be turned into an immigration detention centre.
The former Victorian military barracks, transformed into a jail more than 60 years ago, will become a Home Office immigration unit housing people waiting to be removed from the UK.
Duncan Sleightholme reports:
More top news
A 33-year-old man has been arrested on suspicion of robbery after an incident in Hayle this morning.
The mother of a child with mental health problems has spoken of the pain its caused her family to have him treated hundreds of miles away.
A woman has been arrested and later released under investigation after a flat fire in Hartcliffe in which a man's body was discovered.