>It would indeed appear that some ATC folks are not all that familiar with ICAO procedures....UK folks in particular.<
What is it with you, 411A ?
If you'd spent any appreciable time "over this side" , you would know that UK controllers are as good, if not better, than any in the world.
I've spent over 40 years talking to them, amongst many others, and I know who I would prefer to be talking to on a dark and stormy night!
Sleeve.