Hmmm, my earlier response seems to have been lost
Harold Oswald Day Wilkins PoW 28.7.17 in Martinsyde A3986
John Leo Whitty DoW as PoW 8.7.16 Sopwith Strutter A384
William Hedley Winter PoW 11.10.17 Camel B6314
Horsley presumably Clement Flegg Horsley but can’t see his being taken PoW
There was an ET or ETL Jones with 2Sq but again can’t see PoW data
See the Red Cross website at https://grandeguerre.icrc.org/