"OH BUGGER!" (or Embarrassing Situations)

[Tony Smith]

Originally posted by Howard
I'm only new to this militaria thing, so can some one please identify the uniform on the bloke RH bottom corner?

I think it was a secret Special Forces unit that went to great lengths to remove any badges of rank or other identifying items.
Here we see Sgt Alby Dangling of the Amphibious Secret Unit remove the Tac sign from a wet Cab 12 Blitz as it loads onto a landing craft: