 He switched to Rugby League after London Broncos helped found the Greenwich Admirals in 2001.The Admirals produced several professional players including Louie McCarthy-Scarsbrook, Dave Williams and Mike Worrincy, each of who played for Greenwich, the London Broncos Academy and went on to play in the first team.By the time Clubb was ready to make his first team début, the London Broncos had been pushed into a kind of merger with Harlequins Rugby Union club and thus the team was called Harlequins RL by the time he played in the away fixture against the Bradford Bulls on 18 February 2006; a game which ended in a draw after the Bulls were awarded a controversial late equalizing penalty opportunity.