 After an impressive first season at the club, Brough struggled to break into the team in 2006 and missed out on their Grand Final defeat by St. Helens.Again after just two seasons, Brough handed in a transfer request and was sold to Championship side Castleford Tigers.Brough took a pay cut to take the step down out of Super League to join Castleford in 2007 but was part if the team that won promotion into Super League.