Variation of condition 1 of planning permission dated 3 March 2020 (RN 19/09981/LBC) for the Variation of condition 1 of listed building consent dated 20 February 2016 (RN: 15/10446/LBC) for the: Development of 55-59 Knightsbridge (including retention of Knightsbridge facades, demolition and the dismantling and reinstatement of roofs and chimneys) to provide retail (Class A1) at basement and ground floor levels and 18 residential flats at first, part second floor and third to fifth floor levels. Demolition of 1-2 William Street and its replacement with a redesigned building with internal linkages to 55-91 Knightsbridge. Namely, to allow alterations to William Street Residential Entrances, door to Wilton Place, fenestration changes to rear facade, increased lift Shaft to rear face of William Street, merlons to west elevation, West façade end bay reconstructed, chimneys to coping stone detail in mansard, pavilion gable apex roof stones, ridge height of mansard roofs, projecting signs to shopfronts, retained parapet to no. 55 Wilton Place, general layout alterations, and associated works from RN 19/09981/LBC, NAMELY, to vary the approved drawing numbers to amend the design of the external vent at no. 4 William Street and the removal of a ceiling at third floor level.

Installation of plant equipment to roof (above Metropolitan Line) at Baker Street Station with acoustic enclosure and screen; associated plant penetrations to flat roof area; and internal plant penetrations from retail unit to basement service area. (Linked to 20/02238/FULL)

Internal and external alterations in connection with the closure of existing basement concourse (including access to London Underground entrance), reconfiguration of the basement, ground and lower ground floor levels and change of use of basement retail units (Class A1) and concourse to form new office accommodation (Class B1); creation of a new retail unit (Class A1) at ground and basement level on the Strand; change of use of two retail units (Class A1) to cafe/restaurant use (Class A3) at ground, lower ground and basement levels on Adelaide Street; creation of new shopfronts; replacement roof-level plant (within existing plant enclosure).