Change of use of office building to provide 7 no. residential apartments (Use Class C3a), with associated elevational alterations to the exterior of the building, including insertion of windows, doors and rooflights, application of render and cedar cladding, re-roofing, with the construction of two dormer extensions to the rear roof plane, and formation of external roof terraces with balustrading, together with the formation of associated car parking and segregated refuse and recycling provision