Uniform identification please

Apologies if this is posted in the wrong area, I am more used to WW1 research.

My wife would like to identify which service her uncle was in during WW2. Can someone identify from the attached image?

 

UPDATE with image.
A photo of a cousin shows similar forage cap and uniform during his aircrew training.. He graduated as an Observer with the rank of Sergeant.

Tunis , N Africa 15 Jun 1943 RIP

 

Thank you guys.

Owen - you confirmed my thoughts that it was RAF

Blutto - thank you for posting your cousin's photo, it shows the same uniform that my wife's uncle is wearing.

 

1592679 John Spencer Wilcox

 

Thank you AlanW.

Can I ask where this came from? Is it part of his service record and if so, where could I see it?

 

I'd suggest what he has posted is John's service number.

 

From the N/A files, AIR78 Service Numbers. There is only one John Spencer Wilcox listed, so assume this is his service number.