Provost Staff Corp - or is it?

[dubaiguy]

The bottom left badge I’ve seen sold as Norfolk Yeomanry as well as Provost Staff Corps. To muddy the waters further Cox also shows it in his book as 938 Canadian Military Headquarters.

I’ve listed it as Provost Staff Corps in my collection as that seems to be the weightiest opinion. Am I right though? Is there any pictorial evidence for any of the above or am I just following the loudest voices in the herd?

Thanks gents
Mark