hoping its like 3080 so £650-800 i would say is my budget
If you don't care if its a Nvidia or AMD card the best value card is this and comes with a £120 gift too.

Sapphire Radeon RX 6900 XT Toxic 16GB GDDR6 PCI-Express Graphics Card
Order Sapphire Radeon RX 6900 XT Toxic 16GB GDDR6 PCI-Express Graphics Card now online and benefit from fast delivery.

If it has to be Nvidia then :-
In stock .

Asus GeForce RTX 3080 TUF OC Gaming LHR 12GB GDDR6X PCI-Express Graphics Ca
Order Asus GeForce RTX 3080 TUF OC Gaming LHR 12GB GDDR6X PCI-Express Graphics Ca now online and benefit from fast delivery.

Or Preorder the 3080ti here for £800 :-

PNY GeForce RTX 3080 Ti Revel Triple Fan 12GB GDDR6X PCI-Express Graphics C
Order PNY GeForce RTX 3080 Ti Revel Triple Fan 12GB GDDR6X PCI-Express Graphics C now online and benefit from fast delivery.

These are the best value and quality cards in my opinion at the current moment for pricing.
If you want to add another £50 to your max budget and want the best of the best from AMD there is currently the reference 6950xt for £848.99 which is best price you will find it anywhere.

AMD Radeon 6950 XT MBA 16GB GDDR6 PCI-Express Graphics Card
Order AMD Radeon 6950 XT MBA 16GB GDDR6 PCI-Express Graphics Card now online and benefit from fast delivery.
