There is a John Andrew Hill age 31 registered in Coldingham district, Berwick during 1942 in Scotland.
Alfred Edwin Harrison age 33 is also listed in Scotland in Coldingham district, Berwick.
This appears to be well away to the east the far side of Edinburgh from Greenburn, West Lothian ?. Long way to bring an injured man past a city with hospitals.
The only Q2 John A Hill in EngWal's is aged 22 in Surrey Mid East district.
I can't match the Wounded in Action listing you have for Hill in Sep 24th magazine, page numbers are 347-350.
There are two A E Harrisons killed in 1942, the man killed on May 25th is listed in Flight magazine October 15th 1942, same line as P/O J A Hill. Both listed KOAS.
Foreign Aircrew and Aircraft Ireland 1939-1945