HMP The Verne on Portland is to close as a prison and be converted into an immigration removal centre.
It will provide around 600 additional places to hold immigration detainees awaiting removal from the country.
More top news
A new road link between St Austell and the A30 has become a step nearer after the Government pledged to contribute £79 million.
Chancellor Philip Hammond has delivered his Budget which he believes will help build "a Britain fit for the future".
Sophia Bird has the forecast for Devon, Cornwall, Somerset and Dorset.