Thanks to a message on the Chailey 1914-1918 guestbook, I am able to correct the assumptions I had made about who P Durrant was. I had assumed that he was Peter Durrant who was born in Buxted. The message puts me straight:
"My Grandfather John Hounsom Durrant had the butchers business at Chailey Green until he retired in 1946. The P Durrant you refer to is Percy Hounsom Durrant, who was born in Guildford in 1900, while his father was serving in the Boer War, the family moved to Chailey in ca 1903. Percy was a cadet in the RAF at that time."
My thanks to R J Durrant for contacting me. I'll be updating Percy's page later today.