Unfortunately can't see any Army service records to check his pob
Hubert Guy Stuart BucklandThird service record Rank: Second Lieutenant, Corps: Labour Corps Year 1914-20
Service number 6484, 553046
Second service number 553046
Medal type British Army Medal Index Cards, 1914-1920
Rank Private,Private,Second Lieutenant
Second rank Private
Third rank Second Lieutenant
Regiment 16th London Regiment, Labour Corps
Category Military, armed forces & conflict
Second corps 16th London Regiment
Third corps Labour Corps
Service record Soldier Number: 6484, Rank: Private, Corps: 16th London Regiment
you can download his medal card National Archives - cost £3.50
Image link
http://discovery.nationalarchives.gov.uk/SearchUI/Details?uri=D1568302Added - You can view this medal card on Anc*y
Hubert Guy Sturrt Buckland
Military Date: 1914-1920
Military Place: England, Wales, Scotland, Ireland, United Kingdom
Regiment or Corps: London Regiment, Labour Corps
Regimental Number: 6484, 553046
UK, British Army World War I Medal Rolls Index Cards, 1914-1920