Dr Rewcastle becomes the first female doctor to join the Naval Reserve.
Full title reads: "First Woman Naval Doctor".
GV People walking towards camera along London street past sandbagged building.
MS Woman Naval Dr Rewcastle entering building.
MS and CU of Dr Rewcastle posing at door of building.
VS CUs of Dr Rewcastle at her desk and on the telephone, she wears WREN (Womens Royal Naval Service) officer's uniform.