The Government has revealed that GCHQ operated from 8 Palmer Street, London SW1H 0AA between 1953 and 2018, when the nondescript office building was vacated and it is now reported that it has been sold for redevelopment.
According to the Estates Gazette on 5 April 2019, the government has sold GCHQ's former central London headquarters to an unnamed property developer for "an undisclosed sum likely to be worth tens of millions of pounds". The building itself remains officially registered in the name of the Secretary of State for the Environment and no notice of the sale has been registered.
The building formerly known as Century House, at 100 Westminster Bridge Road SE1, the former home of MI6 between 1964 and 1994, also had its past revealed when it was sold for residential development and became the Perspective Building.
Hidden in plain sight, GCHQ’s secret former London office has been confirmed as a nondescript postwar block close to the centre of power in Westminster. As the monitoring agency moves to another location in the capital, it has disclosed that for more than half a century its staff worked at a site in Palmer Street, opposite a busy entrance to St James Park underground station and close to the Ministry of Justice.