There is something a bit odd about that list in the
OP▸ - it is shorter than the 153 quoted in the article.
Aberdeen and Accrington are missing from the start, and Winchester, Wokingham, Wrexham, and Yeovil from the end. Note that this list is a shortlist for for a vote for rankings, and I think names can still be added to it which would increase that number.
There was another of these nomination-based lists in December, the
Happy at Home Index from Rightmove. This is ranked, unlike the other one. It still has its oddities: the page has no national list, and the selector map includes Norhern Ireland but its link does not work. That is presumably why, having merged the regional lists into one, it has 17 ranks missing!
Given the subjectivity and personal bias in the whole process you'd expect several towns to be in both lists. Oddly, or perhaps suspiciously, the coincidences I can find are the first and last four names with national ranks for "happiest":
Aberdeen 121
Winchester 2
Wokingham 4
Wrexham 77
Yeovil 188
If course it's not surprising that what some of us find makes us happy, others find a "Bland, Boring, Soul destroying mediocrity with a gaping cultural void". And vice versa.