You’d think a country with a queen would have a queen bed, but no.
British mattress sizes aren’t the same as American mattress sizes (even though they use many of the same terms – well, aside from “queen”). Their sizes are as follows:
Single bed: Close to our twin size, but a little smaller
Double bed: Close to our double/full size
King bed: A little smaller than our queen size
Super King bed: A little smaller than our king size
Confused yet? Yeah, me too.