Guys, can you please name and shame these training establishments?
Nope, of course not.
This should be a core part of the PPL course
Well, guess what, it isn't. Therefore it's up to the instructor, student, and local ATS if they choose to do it or not.
especially for the navigation elements
You'll do better not getting lost in the first place
Any instructor who has not taken their student through the process of 121.5 (by the end of the course) needs a serious talking to
Why? The rest of the world does not usually do practise pans and we all seem to manage just fine.
I'm not against practise pans, far from it, but the self-righteousness shown above is... well, a bit provincial.
Thankfully other posters have already replied with all the relevant info.