Leslie Reginald Warren's parents lived in Kensington, London, in 1891 and Kensington was the family residence in 1901; his father, Reginald C. Warren, was a solicitor, from Iveybridge, Surrey; his mother, Kathleen M. Warren, was from Hurstpierpoint, Sussex.
Distinguished Flying Cross (DFC)
Lieut. (T./Capt.) Leslie Reginald Warren
This officer has taken part in forty-six successful raids, fourteen of which he has led. In these operations his formation has only suffered one casualty. This remarkable immunity has been in the main due to his brilliant and skilful leadership; he combines keenness and determination with sound, clear judgment. In addition to raids, he has taken many area photographs, and carried out five long-distance reconnaissances, rendering valuable reports.
Supplement to the London Gazette, 21 September 1918 (30913/11255)