 He scored 31 goals in 35 games for Dulwich in the 2006–07 season.Dickson signed for Charlton Athletic on 12 March 2007 from Dulwich Hamlet for £35,000, signing a two-and-a-half-year deal after scoring twice in a reserve-team game for Charlton.As he was signed outside the transfer window, he was prevented from making a competitive appearance for Charlton, although he maintained his healthy scoring record for the reserve-team.