Doug, you are right about non british BD tunics being preferred for walking out uniforms. Canadian made BD blouses were particularly popular amongst British soldiers.
I'm afraid Jerry is correct about the insignia not being genuine: it is quite obvious for the Pegasus patches as you suspected. You can find numerous examples of originals on this forum (
https://www.britishbadgeforum.com/fo...ad.php?t=64777)
As for the titles, they look suspicious. The correct version is more curved and the font usually thicker (see photos).
Hard to form an opinion on the wings as they have been whitened (popular arrangement for a best BD). I don't like the L/Cpl chevron which should be more brownish in my view.
Sorry about the bad news.
Cheers
Pierre