APPROVED. Use of part basement, part ground, part first and the upper floors of 49-50 Charing Cross and part basement and part ground of 12 Whitehall as 10 residential flats (Class C3). External alterations include extensions within internal lightwells at second and third floor levels, installation of plant within enclosures at roof level and within lightwells, alterations to windows, doors, balustrading and parapets.