You have no clue, and no way of knowing.
Cut and paste, it sounds simple: “Okay, it's the EU, it should be the same.” It isn't the same, though, because it's the U.K. and the U.K. has its own interesting dynamics, which are different from the EU's. To say an EU form now works in the U.K.—is it fair to say that would be the smartest thing to do?