Amendment to no. of chimneys and windows on roofscape (Application under Section 73 to vary condition 2 (approved plans) of planning permission no. 18/04069/RG3 (Retention of Pinstone Street and part of Charles Street and Cambridge Street facade, demolition of buildings behind and erection of a seven-storey building for mixed use - retail/cafe/bar space (Use Class A1, A3, A4 and A5) at ground floor with offices (Use Class B1) above and associated works (Block C) (Application under Regulation 3 - 1992))