Fraser Bond are the leading lettings and property management agents for 78 Duke Street - London W1K. 78 Duke Street development on the corner of George Yard and Duke Street in Mayfair, London W1. The site comprises three 6-storey terraced houses at No. 78, 80 and 82 Duke Street. Nos. 78 and 80 were originally built in 1886-87 by Killby and Gayford. No. 82 Duke Street is home to the Barley Mow pub built by George Trollope and Sons. Planning History 2020 August - Planning permission granted for the use of the building (lower ground and ground of nos. 78 and 80 as a restaurant (Class A3), use of.