CONVERSION OF FORMER MAINTENANCE BUILDING INTO SHORT TERM RESIDENTIAL USE (CLASS C3) INCLUDING DEMOLITION OF LATER EXTENSION; CONVERSION OF GROUND FLOOR OF BUILDING WITHIN GUNBOAT SHEDS TO LIGHT INDUSTRIAL USE (CLASS B1) AND FIRST FLOOR TO HOLIDAY LET (CLASS C3); ALTERATIONS TO THE GUNBOAT SHEDS TO PROVIDE COMMERCIAL AND OPEN AIR STORAGE (CLASS B1/ B8); CONSTRUCTION OF TWO-STOREY BUILDING COMPRISING COMMERCIAL USE (CLASS B1) ON THE GROUND FLOOR AND 6 TWO-BEDROOM FLATS (CLASS C3) TO FIRST FLOOR; AND, DEMOLITION OF PART OF THE BOUNDARY WALL TO PROVIDE NEW VEHICULAR ACCESS (LISTED BUILDING IN CONSERVATION AREA AND SCHEDULED MONUMENT) (as amended by drawings and supporting documents received 22.7.2020, 10.8.2020 and 27.10.2020)