Yes, BM, that UK accent odyssey was a weak moment in a fairly reasonable episode. The problem is that it's such a truly vast subject and selecting the illuminating and entertaining aspects fraught with difficulty. Ian McMillan's accent trip around the Yorks railway map was far better!
I'll continue to watch it because it's something I love and am fascinated by. When I was a youth I recall having a conversation with a provençale gardener about a price for something. We were talking about 70 - 90 Francs... in his words
"environg septante a nonante francs". This was pure Provençale