think callum will... and Liam and Stephen are improving all the time so maybe they will ...... I would say paul no chance but it looks like he might get a shot at abraham where he'd get spanked unless he threw a lucky shot or summat.
Callum will almost certainly IMO in fact he will go well beyond a guy who just becomes champion he will be a p4p level fighter. Stephen could as well but i think he may just fall short unless he faces a weak champion. Liam and Paul no way will they ever be world champion
From what I've seen with Callum, I think he has the talent and potential to do so - although some people are getting carried away. Stephen - possibly could if he gets the right break and opportunity. Big 'IF' though. Paul or Liam won't do anything at world level, but there's no shame in that - in winning and defending British titles they've achieved a lot more than most.