, the No. 38, South Street, Mayfair
, in the City of Westminster
, was constructed between 1920 and 1922 for the industrialist Henry McLaren, 2nd Baron Aberconway
, in a neo-Georgian
Aberconway House is an imposing mansion of , with an adjoining guest house with ancillary accommodation of . Both properties have a southerly aspect over and access into one of Mayfair's Secret Gardens.
The official architects were Edmund Wimperis
and his partner W. B. Simpson
. However, 38 South Street was in fact almost entirely designed by the young John Murray Easton
who was later responsible for the Royal Horticultural Society
's New Hall of 1926 - 1928.