Need information about Doreen Eileen Mary Cooper 1913-2001

I am a British citizen currently domiciled in Holland. For sometime I have been trying to acquire information about my mother, who died at the age of 88 in 2001. In the 1930s she was living with her mother and father in Shirley, near Croydon, South London, and around 1940, at the outbreak of the Second World War, she worked at the famous Croydon Airport. Subsequently she transferred to the top-secret airfield at Whitchurch near Bristol, which was used by VIPs such as Churchill, De Gaulle and celebrities like Bob Hope. She lived close by with her mother during the bombing of Bristol by the Luftwaffe. Until now I have been unable to obtain details of my mother's work at these sensitive locations. If anyone has any ideas I'd be grateful. My mother's name was Doreen Eileen Mary Cooper (born Willesden, London, 1st May 1913). My grandmother's name was Violet Blanche Cooper, nee Markham, (born St Pancras, London, May 1895/ died Paddington, London, March 1969). My grandfather, who served in the Royal Sussex Regiment in the First World War, was Maurice Patrick Cooper (born Willesden, London, 1889/died Croydon, South London, 1938).

Need information about Doreen Eileen Mary Cooper 1913-2001