CHANGE OF USE FROM GROUND FLOOR RETAIL AND FIRST FLOOR RESIDENTIAL (CLASS E & C3) TO FORM A SHORT TERM LET/ HOLIDAY COTTAGE (CLASS C3) AND EXTERNAL ALTERATIONS INVOLVING THE REPLACEMENT OF EXISTING WINDOWS AND DOORS, THE INSTALLATION OF ROOF LIGHTS AND THE WIDENING OF AN EXISTING DOOR OPENING ON THE REAR ELEVATION AND THE DEMOLITION OF A CHIMNEY