is an English former professional footballer who played as a striker.

He began his career at Crewe Alexandra, following over a decade in the club's Academy, and scored on his senior debut in April 2006 following a successful loan spell at Witton Albion He was named as League One Player of the Month for September 2006 and would score 31 goals in 58 League One games for the club. He was sold to Bristol City for a fee of £2.25m in July 2008. He won the Football League Goal of the Year award for 2009 and would score 45 goals in 124 Championship matches across just under four seasons, becoming the division's joint-top-scorer in 2010. He was sold to West Ham United for an undisclosed fee in January 2012 and was an unused substitute in the club's play-off final, though did not feature in a Premier League match. He joined Cardiff City for a reported £2.75m fee in August 2012. He picked up a serious injury early in the 2012–13 promotion season and was limited to eight Premier League appearances in the following campaign. He spent the second half of the 2013–14 season on loan at Wigan Athletic. He signed with Milton Keynes Dons in September 2015 and would go on to spend two seasons at the club. He spent the 2017–18 campaign at Scottish Premiership side Aberdeen and the 2018–19 season with Bury. He joined Mansfield Town in July 2019.