Been waiting for this phone to drop below £300 in the UK, direct from a retailer (and not a smaller company that may have refurbished models)
However, if you don't mind the slightly longer delivery (1 week), you can get it for 299Euro.
I just purchased it with Amazon handling the conversion, and including standard postage it came to £264.82.
It will come with a Euro style plug, but if you have an existing UK charger I'm sure you can just use that.
Also, it does state it is sold and dispatched by Amazon.
Edit 30/8/21: White and Violet in stock. Black out of stock.