#3 Joe Coffey
In terms of size, Joe Coffey is one of the only men in NXT UK that comes close to Walter and combining this with his hard-hitting style and the rest of Gallus, and you have a big threat to the current Champion. Coffey has been one of the best yet most overlooked talents in the UK for quite some time, and after his amazing bout with Pete Dunne at TakeOver: Blackpool, we know he's a main event level talent.
Out of everyone on this list, Coffey is the least likely to take the title away from Walter, but given the chance, The Iron King could push him to his limit, and it's most likely that he'll be a stepping stone for Walter on the way to bigger things. NXT UK is in a great place right now, and Coffey is a fantastic talent, and while not everyone gets to the top, Coffey is someone that will eventually get there, but likely after Walter is gone.