[nvm0n1]

Brexit had literally no impact on this, and will likely help significantly. Remember that the eurozone has been an economic disaster for most of Western Europe outside of Germany, and now Germany is sputtering out too. The UK was "allowed" to not adopt the euro for legacy reasons but the EU would likely have demanded entry and many other harmful policies had the British accepted the argument that they couldn't leave even if they wanted to (which was the core of the remain argument).

[jemmyw]

> the EU would likely have demanded entry and many other harmful policies

That's not how it works. The UK and EU were bound to one another by various treaties. There was no mechanism for the EU to make such a demand, whereas an exit from the EU is a defined path.

If the UK wanted to rejoin then the EU would be able to make such a demand.