The broadcaster bought Caversham Park in the 1940s and based its wiretapping service there during the Second World War.
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The 93-acre estate near Reading, Berkshire, is still home to the organisation's monitoring service, which will be moving at the expense of 65 jobs.
The grade II listed manor, which played host to the Antiques Roadshow last year, was first mentioned in the Domesday Book and was valued at the time at £20.
The stately home is on the market alongside 93 acres of land
When it appeared in the Domesday Book it was priced at £20
It is thought the site will be used for residential or retirement homes
Since then it has undergone a significant transformation and has been home to one of Henry VIII's bodyguards, an imprisoned Charles I and the Earl of Craven — who bought it for £10,000 in 1633.
The original 1,800-acre estate was bought by developers for an unknown fee in 1920 and subdivided, with the mansion and park bought by the Oratory School before being sold to the BBC in 1941.
From 2019 the owner's will be able to get in to London from nearby Reading in less than an hour
Caversham Park is a grade II listed manor house
Caversham Park is currently home to the BBC's monitoring service
Ideally located, just two miles outside Reading, from 2019 the future owners of Caversham Park will be able to get to London in less than an hour thanks to the new Crossrail station being built in the town.
Experts predict house prices could plummet by up to 40 per cent due to Brexit and wage drop
A large chunk of the site was sold for housing in the 1960s and is now home to Caversham Park Village and it is thought the rest may go the same way, with residential or retirement properties looking like the most likely option.