More than any other place in England, maybe, but surely not in Britain. Llanfairpwllgwynghyllgogerychwrndrobwllllantysiliogogoch has 15 consonants in a row, and I can't imagine anywhere in London can match that..........
Narolines what are you talking about? The most consecutive consonants in Llanfairp.g. etc. is 4 i.e. RNDR. Nowhere in the name are there more than 4 consecutive consonants.
'Y' is a vowel in such words as 'hymn' or 'rhythm', not a consonant. In addition, 'W' is a vowel in Welsh words such as 'cwm', the equivalent of English 'combe'.
I feel like such an idiot!! I SHOULD know that, my heritage is Welsh, I speak a small bit of Welsh (including knowing how to say the full version of Llanfair PG!) I guess I just didn't realise they considered the W as a vowel, I just knew it was pronounced as one.