His equaliser against Croatia at Stadion Miejski in Poznań on 10 June 2012 introduced St Ledger into an elite club of Irish goalscorers at the UEFA European Championship.

[7][8] He featured in Sky's series Big Ron Manager, a behind the scenes look at Peterborough United's struggle to enter the Football League Two play-offs at the end of the 2005–06 season.

[9] After a trial with Birmingham City on Barry Fry's recommendation,[10] St Ledger signed a three-year contract with Preston North End in July 2006 for a fee of £225,000, which could rise to £350,000.

[14] In his first season at Deepdale, St Ledger made 42 appearances whilst scoring one goal as Preston, who had been top of the league mid-season, failed to retain a playoff berth come May.

St Ledger began the 2007–08 season as first choice centre half alongside Youl Mawéné, scoring his second goal for Preston in a 1–0 win over Coventry City on 9 February 2008.

[16] St Ledger made 37 appearances for Preston during 2007/08 as the Lilywhites were guided clear of the relegation thanks to a late upturn in results under new manager Alan Irvine.

It was St Ledger's late winner in a 2–1 victory over QPR that clinched the final playoff spot on the last day of the season, heading in a long throw by Jon Parkin.

[23] St Ledger went on to make 22 appearances for Preston in what became a nightmare season as he saw mentor Alan Irvine sacked one game after his return from Middlesbrough.

The centre half scored two further goals against Plymouth Argyle and West Bromwich Albion and Preston hung on to Championship status under Irvine's replacement, Darren Ferguson.

[25][26] Despite Ferguson's dismissal in December 2010 and an eventual improvement in results under successor Phil Brown, St Ledger could not help Preston being relegated to League One.

Considered too good for League One football and with Preston desperate for both money from transfers and from a drop in the wage bill St Ledger left Deepdale in the summer of 2011 to join Leicester City.

After a row with manager Nigel Pearson on being unhappy about being dropped for the Boxing Day fixture against Ipswich Town, St Ledger was told he would never play for the Midlands club again and was transfer listed.

[41] After Sol Bamba also left for the 2012 Africa Cup of Nations the following week Leicester were forced to bring St Ledger back into the team because of lack of cover.

He then had a run of games in the first-team until pulling his hamstring in a 2–0 win over Bristol City on 6 October,[44] an injury which required specialist treatment in Germany.

He did not make a league appearance for the club and, in January 2018, joined Solihull's divisional rivals Guiseley,[60] where he took caretaker charge of the team between February and May 2018.

"[65][66] After being called up by newly appointed Manager Giovanni Trapattoni,[67] He made his debut in a friendly against Nigeria at Craven Cottage on 29 May 2009,[68] and played his first competitive match a week later, a 1–1 draw away to Bulgaria in a qualifying game for the 2010 FIFA World Cup.

[70] The goal gave Ireland a late lead against the World Champions and was almost St Ledger's "Ray Houghton" moment, guaranteeing him iconic status in only his sixth appearance, only for Alberto Gilardino to score an even later equaliser for the Italians.