I hadn't looked at this list before, so thanks for the nudge.
I was surprised to see
https://www.pubsgalore.co.uk/pubs/73890/ on the list at number 19, having recently read Ian Mapp's review of 24th August 2021: "To sum up the beer - I overheard one barman say to the other "keep your eyes on the SBA, we had complaints yesterday". Heard when I was half way down my SBA :-) It was in keeping with the quality I have come to expect during my weeks walking around their tied houses." (rating 7)
But looking further down, Alan Winfield gave this pub a rare 10 - way back in 2011! I thought the "weighted averages" were supposed to give less weight to older reviews - or does Alan's huge number of reviews give his ratings more weight?