Which is an astonishing statistic, unless 'damage' includes just a broken window. That said, the sainted BBC has reported that Hull (with London) 'was the most heavily bombed city in the UK, with 95% of its houses damaged'. When I lived near Hull I was told that in the news Hull was never named in wartime news broadcasts, it was just 'a city in the north east'.
news.bbc.co.uk
I have also been told (can't remember by whom) that, per head of population, more bombs fell on Lowestoft than any other town/city. Apparently it was a handy place to jettison bombs without having to go all the way inland.
Not meant to start a pissing competition, BTW.