More on the early way of wearing wings:
A few early shots taken ca spring 1941 with an uncut pair of wings on a NCO's BD helping other para members preparing what appears to be the early type of parachute equipment container.
AYY99 Container first type 2.jpg AYY99 Rectangular Wings.jpg
Another interesting document below proves that uncut wings could be worn on jump smocks. This was not common practice though particularly late in the war. This particular photo was taken in April 1944 during a major airborne exercise (source IWM).
H37719 22 April 1944 Uncut Wings.jpg