On the medal card of "my" deserter - Harry - it says "Declared a deserter 15/5/17" and " 14 Star ret'd (deserter) 15/6/17". It also listed his references for the Victory and British medals. When I checked the medal roll in the National Archives, however, it was written against his name "No medals". 1922 dates are also on both records, so I think that's when the medals were awarded.