Re the WRNS photo in my post above, here they are in their billet c/w Mossie nets over their beds.
Lady on the right appears to be checking her iPhone, but surely not - way back in 1944!
WRNS weren't the only white service women in Ceylon during WW2. The WAAF were there too as these two photos of WAAFs disembarking from a Troopship in Colombo Harbour and eating in their own dining room (location in Ceylon not specified).
IWM Photos