Cheddar in most places outside the UK is "not cheddar". If I go to the supermarket here in Sweden and buy the first "cheddar" I see prominently displayed, I'm not getting cheddar from the UK.
I will have to try it next time over there, but please don't be offended when I say that based upon all the cheeses I have eaten over there I won't be holding my breath.
Real cheddar is full of flavour, slightly sour. Great stuff.
But you can go to places like the US and cheddar is not cheddar and they should not be allowed to call that cheddar.