I know what you mean about M5/6 Rich, had a few days in Malvern area a couple of weeks ago in the motorhome (from Lincolnshire). Daughter bought wife and I a tour of the holy shrine at Pickersleigh Rd. Excellent day.
I followed the advice of my satnav, BIG MISTAKE. Satan must have had a hand in the invention of motorways.
Return journey was done the old fashioned way, mostly A46. Much more civilised.
Nev.