No one (sane anyway) believes that Cleverly is the best British boxer, I was just stating the fact that he is indeed the only official British world champion, no matter how bogus the championship is, that's why I called him ABC champ and not world champ.
The biggest issue for many UK boxers is the complete lack of a rounded skill set. Calzaghe was so rare because he could do everything. Not all of it was technically pretty, but he could find the gaps for his shots whatever range he was at. I wish trainers would spend more time building all-round ability.