Happened to spot this on Sky Arts the other night, didn't ring any bells so set the box.
After I watched it I did a Google and came up with this IMDB page ...
https://www.imdb.com/title/tt7176698/episodes/?ref_=tt_ep_epl
I can see now why no-one bothered with any ratings after episode 1. Maybe I'm the only one who sat through all 7?
Quite a few 'names' in the various episodes but it really was appalling. Never raised even a smirk