NellG
Oh dear, is Johnny Forriner upsetting the apple cart again? Ladies, have you heard yourselves?
It's a virus, its sole purpose is to infect and mutate, it's what viruses do. It's not choosy how it does it. These variants take the name of the country in which they first appear - it doesn't mean that the same mutation wont occur completely independently elsewhere in the world around the same time. It evolves and adapts, it doesn't have a passport or a nationality, it doesn't wave a flag, it's not patriotic. It certainly isn't xenophobic and it couldn't give a flying hoohah about Brexit. Once it exists, it will evolve and do what viruses do - infect indiscriminately.
And for the love of all that's holy don't use Aus and NZ as examples. They are not comparable to Europe or the UK.
No, the UK couldn't hope to copy Australian and New Zealand, but there's such a thing as "best practice" and the UK could have learnt something.
For a start, it could have forgotten about the silly idea of aiming for population (aka herd) immunity. Sweden and Brazil both tried - with disastrous consequences. The countries which are now getting back to normal aimed for zero Covid, which meant getting the transmission rate right down and acting quickly when there were isolated outbreaks.