The checker shows max 1000/220, so you wouldn't be able to anyway.
Wrong. Openreach checker say can get 1600/115 only if you order via Zen, Freeola, IDnet, EE and Vodafone as they provided 2.5Gb ONT but I chosen not bother about it because it will be expensive monthly cost. I only got router support 1Gbps lan port and wan port.
I know my PC pci network motherboard support 2.5Gbps for ethernet lan port.
It Looks like EE has removed Openreach FTTP 1800/120 from their website as it now disappears. (I was wrong, it was hidden under FTTP Ultimate option)
Only offer up to 1000/115.
Don't know why is this and what is the reason for this?