Marlborough Mansions is a residential block in Fortune Green, NW6
E. J. Cave, one of the district’s most prominent Victorian builders, built the Cannon Hill estate where Marlborough, Buckingham and Avenue Mansions were built in the triangle formed by Cannon Hill, Finchley Road, and West End Lane in 1896-1900.
Conductor Sir Adrian Boult lived at at 78 Marlborough Mansions on Cannon Hill and has a blue plaque to his memory there. Nigel Balchin, the novelist, died in 1970 also in Marlborough Mansions.
