In the 1862 map, Harp Court (in red, listed as Harp Alley) is seen north of Fleet Street and south of Stonecutter Street.  St. Bride's church (in blue), near where the pump was probably located, is south of Fleet Street. Farringdon Street, where Mr. Hutchinson lived, is to the right (in orange).

Source: Stanford's Library Map of London and its Suburbs. Published by Edward Stanford, 6, Charing Cross, London, February 15, 1862.