Yes London is a unique destination as far as ATC procedures, professional crews should'nt need extra prompting by busy controllers, yes it's a different system, get over it.
I see... You agree with southoftheborder and the former FAA Administrator who started enforcing a policy that controllers were allowed to make mistakes, but pilots were NOT allowed to. She effectively made pilots responsible for all the controllers' mistakes by not requiring controllers to correct inaccurate clearance readbacks.
I also find it interesting that you don't seem to think pilots are busy during the arrival...