MaddieGillard The first one is showing as in stock for me, but maybe that's because I'm not in the U.K. and don't see all the relevant info. Sorry about that. It looks like it might be in stock at Argos though:
https://www.argos.co.uk/product/4163572
If not, this is more expensive (£500) and has the same hardware as the first one I linked:
https://www.currys.co.uk/products/hp-15fc0525sa-15.6-laptop-amd-ryzen-7-512-gb-ssd-black-10264308.html
This is another alternative with an equivalent graphics chip (the one with the i7-1255U):
https://www.dell.com/en-uk/shop/laptops-2-in-1-pcs/inspiron-15-laptop/spd/inspiron-15-3520-laptop/cn32044sc?ref=variantstack
And this one (with the Ryzen 7 8840U) is on par with the faster models I linked, just with a 16" screen that's fine but not nearly as pretty as an OLED:
https://www.dell.com/en-uk/shop/laptops-2-in-1-pcs/inspiron-16-laptop/spd/inspiron-16-5645-laptop/cn56403sc?ref=variantstack
Point is, you have options if you're ready to buy now, and will still have options (mostly different ones) if you wait. This type of laptop is always common and not so expensive if you know how to look.