 In March 1999, Corbett's next fight saw him also lose his IBO Inter-Continental Championship to a relative novice in Stephane Allouane, but he rebounded later that year by defeating future British & Commonwealth Light-Heavyweight Champion Neil Simpson to win the IBO Inter-Continental Light-Heavyweight Title, a belt he never lost in the ring.Corbett retired from the sport in 2004 but made his comeback in 2008 with a 6-rounds points win in Dublin.On 19 May 2009 he competed in the first cruiserweight instalment of the 'Prizefighter' series, defeating the former Southern Area Heavyweight Champion Micky Steeds on a 3-round points decision in the quarter-finals before losing on a 2nd-Round stoppage to the unfancied Ovill McKenzie in the semi-finals.