Uttoxeter, Billericay or Loughborough
Cherrypick much? 99,999 out of 100,000 English speakers will live their entire lives without speaking any of these names.
I come across a lot of very awkward English from very well educated people; I really do. They are not stupid - English is difficult to master.
Doesn't matter. It functions as a market language. The goal is to be understood. For those with the interest, it is possible to speak English well; a hobby for the refined, like the opera or collecting rare books. For the rest, getting one's point across is a satisfactory outcome, and one reached more easily than with Chinese, where people speaking poorly are vastly harder to comprehend due to lack of tonal fidelity.
China is already on the charm offensive in UK in a major way
And they're conducting this offensive in English. Once everyone in China learns English - and that, or something approximating it, is happening - there's little reason for people in England to turn around and learn Chinese. Perhaps it will provide an advantage for a tiny number of people in certain fields, but that's about it.
Everyone in Denmark learning English sure didn't turn into everyone in the USA learning Danish.
In any case, the Achilles' Heel of Chinese is the writing system, which you ignored in your reply. Even Chinese schools in China teaching Chinese to Chinese children start with the Latin writing system before they move on to characters. As long as there are alternatives that do not use the Chinese writing system, Chinese will never be the global lingua franca or anything like it.