rivals Bradford. He made his Leeds début against Huddersfield on the opening day of the season. Peacock played for Great Britain while at Leeds in 2006 against New Zealand (3 matches), and Australia (2 matches), in 2007 against New Zealand (3 matches). He played in the 2008 Super League Grand Final victory over St. Helens. and was also part of the 2007, 2009, 2011 and 2012 Super League Grand Final squads and team that won the World Club Challenge against Manly Sea Eagles. He played for England in 2008 against France. On 16 June 2008, Peacock was announced as the England captain for the 2008 Rugby League World Cup in Australia. In Group A's first match against Papua New Guinea he played as a in England's victory. He played against Papua New Guinea, Australia, and New Zealand (2 matches), in 2009 against France (2 matches), New Zealand and Australia. Peacock played a starring role in Leeds' 33-6 Grand Final victory over then reigning champions' St Helens. He played a full 80 minutes to win his 4th Super League champions ring. He was named in the Super League Dream Team for both the 2008's Super League XIII & 2009's Super League XIV season. He played in the 2009 Super League Grand Final victory over St. Helens at Old Trafford. He was selected to play for England against France in the one-off test in 2010. Peacock signed a new one-year deal at Leeds in July 2011. Later that year he played as a for Leeds in the 2011 Challenge Cup Final defeat by the Wigan Warriors at Wembley Stadium. He played in the 2011 Super League Grand Final victory over St. Helens at Old Trafford. Peacock was appointed Member of the Order of the British Empire (MBE) in the 2012 New Year Honours for services to rugby league. On 26 June 2012, Peacock announced his retirement from international rugby league. He played in the 2012 Challenge Cup Final defeat by the Warrington Wolves at Wembley Stadium. He played in the 2012 Super League Grand Final victory over the Warrington Wolves at Old Trafford. He enjoyed a resurgence the following season, and was once again named in the Super League Dream Team in 2013, 2014 & 2015. Peacock played in the 2014 Challenge Cup Final victory over the Castleford Tigers at Wembley Stadium. He played in the 2015 Challenge Cup Final victory over