Not like we are short of Cheddars in the UK tbf.
I'd really like to try this Cougar Gold, though. People get nationalistic about cheese, but good is good wherever it's made. If England can have the best brie I know of (Baron Bigod) there's no reason in principle the US couldn't have the best cheddar. Canada makes rather nice cheddar too, which you can buy in UK supermarkets.
The US terminology is odd, though. Sharp isn't how I'd characterise most extra mature cheddar.