A disused tube station has been sold by the Ministry of Defence for £53m for housing.
The property on Brompton Road was a tube station until 1934 and then became a Second World War command centre.
Until recently it was used by the London University Air Squadron, the London University Royal Naval Unit, and 46F Squadron Air Training Corps.
The money from the sale will be put into the defence budget.
The platform and tube line remain the property of transport for London and the new owners will not have access to them.
Defence minister Andrew Murrison said: “The Ministry of Defence is committed to selling off its surplus land and property in order to provide the best possible value for money to the taxpayer. At the same time we take our role as a custodian of the nation’s history very seriously and have been working to record the historic significance of the building.”