The FOC line is due th week(ish) and has already been seen for order on Asda direct.
Th wave 3 Prime Deluxes have been spotted at John Lewis and Sainsburys, failing that UK stock is plentiful on EBay (admittedly apart from the vehicon). Movie Que and Soundwave weren't released in Hasbros english speaking territories, so no luck there.
As for Blu Rays; the Darkness Rising
DVD is coming to the UK, but I understand why you'd want HD.
I'm not the first to defend Hasbro UK, but things aren't quite as bleak as you'd think