Hi Rabbit B
Sorry but I was feeling tired and lazy last night and did not bother to check who identified the MC ribbon and so credited "an earlier post" instead of Rabbit B.
I was hoping that the combination of MC and DFC (perhaps AFC) would be fairly unusual and allow us a small list of possibles. However, the sites that you referenced show for WW1 there were 37,081 MCs, 1,100 DFCs and 680 AFCs awarded so perhaps I am being a little too hopeful. Nevertheless, we are looking for a man, who was a Flight Lieutenant in the 1920s, whose decorations start MC DFC/AFC (both without bars). It is difficult with an old black and white photograph to make out the rest of his campaign medals and the very similar campaign medals of his comrades but if we did know this it would help to narrow the field a little further.
Humble apologies for the previous lack of acknowledgment
Gobbo