A small house at 16-18 Queen Anne's Gate, across from St. James's Park in London, which the intelligence branch of the British Army occupied from 1884 to 1901.
The house at 21 Queen Anne's Gate served as the office and official residence of the first chief of the MI6 (Secret Intelligence Service), Capt. Mansfield Cumming, or “C,” from 1909 until his death in 1923. He built a secret passageway between his office and the MI6 headquarters at Broadway.
Cumming’s successors -- also known as C -- remained at Queen Anne’s Gate until 1966, when MI6 moved to the modern Century House, south of the Thames River at the Victoria Embankment.
