Ok folks - premium double-double repeating 4 character right here with the powerful letter X. With Double repeating plates presenting as a rarer and more exclusive subset of any number plate range, those with more than one double repeating set of characters on the same plate is something to get excited about. We've seen 99BB on a beautiful red Ferrari recently, and 99NN on a Lamborghini Urus, which means there is something special about this format. Given it's format, it poses as a next-in-line alternative to a LN or NL combination, so in this case, if you wanted X4 for your BMW and couldn't find it, you could very well use XX44 and it's just as rare (i.e. 1 of 520), despite the fact that it's part of the wider 4 character range. Very exciting indeed.