30 Grosvenor Gardens, SW1

The ornate building at the southern tip of the triangular garden. 30 Grosvenor Gardens at Ebury Street, became the ‘Dalby Domestic Employment Bureau’, the staffing agency used as a front for Major Dalby’s clandestine outfit in The Ipcress File, to which Harry Palmer (Michael Caine) gets transferred. In fact, much of the movie was shot within the building, which was entirely taken over for the production.

The Ipcress File (1965, dir: Sidney J Furie)