The plan is part of a 143-million-pound boost to improve Britain's armed policing capability over the next five years, which will see 1,500 firearms officers recruited.
Che Donald, firearms lead for the Police Federation of England and Wales, told 'Sunday Express' that the new counter-terror base in the southwest would provide better cover for a largely rural part of Britain.
"Hubs we have at present are in major urban areas, London, West Midlands and Greater Manchester. But I know that plans are afoot to incorporate the south-west region," he said.
According to intelligence reports sited by the newspaper, Islamic State (IS) terrorists are planning a mass shooting in a remote village of the UK, including gunmen going from house to house.
A Tunisia-style attack on a holiday park is also feared.
Sensitive sites like nuclear power stations also tend to be in rural areas and police from such areas has already undergone training exercises on how to respond.
It is to be located in southwest England and will cover vast tracts of Devon, Cornwall, Somerset and parts of Gloucestershire.
