Use of the lower ground, ground and first floors of 7 Bentinck Street as office (Class E) Use; use of first floor of 2 Bentinck Mews as office (Class E); use of the ground floor commercially let garage (sui generis) as office use (Class E); demolition of the rear infill link extension to 7 Bentinck Street at lower ground and ground floor along with partial demolition of 2 and 3 Bentinck Mews behind retained facades; erection of new mews behind retained facades to include a mansard roof extension at 2 Bentinck Mews and infill link between 3 Bentinck Mews and 7 Bentinck Street to form new office space and incorporating green roof; new plant on 2 Bentinck Mews and 7 Bentinck Street at roof level; and replacement windows. (Part of land swap package with 11 Weymouth Street, 12 Upper Wimpole St and 35a Welbeck Street). [SITE INCLUDES 7 BENTINCK STREET AND 2 -3 BENTINCK MEWS]