I was going through some old reference books today trying to find details on the army flying badge and the flaming grenade badge associated with AOP pilots.
I have a 1970s reference book reads, "The Air Observation Post Pilot wore the Army flying badge up to 1948 when a new bade was produced -- a grenade with a pair of light blue wings and UBIQUE on a scroll below."
Badges and Insignia of the British Armed Forces, 1974
Via the www.ww2wings.com website
Army Flying Badge (1st Pilot Glider Pilot Badge) above. AOP Pilot Badge (Artillery Pilot) below.