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:
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Expect scattered showers tonight. Tomorrow will be similar to today, except there'll be fewer showers. Sunny between the rain. Feeling fresh
Tomorrow will be very similar to today except there'll be fewer showers. It will be sunny between the rainy outbreaks. Feeling fresh.
Jailed Somerset fraudster James McCormick has been penalised for failing to forfeit cash and assets worth nearly £8m