57 Harley Street London W1G 8QS
Infill of existing rear lightwell at basement and first floor, infill of rear ground floor pathway/lightwell and erection of rear first floor extension (including raising of party wall with no.55 Harley Street) all to be used as Medical Use (Class E(e)) in association with the existing Medical Use. Installation of green roofs and rooflights on proposed extension roofs.