I think Framptons jab is amazing he uses it to set up everything and Groves for all his faults has a very sharp hard jab.
It's not a power punches but combined with his movement he outjabbed Klitchko. Not denying when he throws a lazy one he's asking for an overhand right..
Fury has too much of a backhand slap of a jab for me to consider it the best. Sure he bashed up Chisora and made him quit mainly with the jab so it's not powderpuff. But not a great jab.
Groves as much as I don't like him as the best jab in British boxing.....also think when he is on it billy jo Saunders has a great jab.
Gotta be Georgie boy. His jab is an authoritative one in comparison to most other fighters both inside and outside the UK.