Marsham Towers

Both rotundas were designed to survive the impact of a 500 lb bomb and had 12-foot-thick (3.7 m) concrete roofs.

In 1943 the lowest level of the North Rotunda (codenamed Anson) was kitted out as the reserve to the Cabinet War Rooms.

[5] The rotundas were used as a communications centre and a civil service sports club, amongst other things.

The bland frontage of the blocks, described in Nikolaus Pevsner's architectural guides as "the very image of faceless bureaucracy",[6] was much criticised and local people nicknamed them "the three ugly sisters".

Eventually it was decided to build a replacement for the Home Office on the site and the towers were taken down in 2002/03.