Fraser Bond are the leading lettings and property management agents for 126-134 Baker Street - London W1U. 126-134 Baker Street is a mixed use building on the corner of Marylebone Road and Baker Street in London W1. Three ground floor shops and two restaurants, four with basements having a total floor area of about 605 m², together with self-contained office accommodation of about 934 m² on four upper floors. History 2015 - Planning permission granted for erection of 3-storey extension at the rear of the building at second, third and fourth floor level and use of enlarged second to fourth floors as.