In 2009, he joined Huddersfield Town, where he made over 100 appearances and reached the 2011 Football League One play-off final, before signing for Leicester City.

In 2015, he signed for Cardiff City, where he made 163 appearances and helped the club win promotion to the Premier League after finishing as Championship runners-up during the 2017–18 season.

[11] On 16 March 2007, Peltier was subject to an emergency loan cover agreement, and subsequently joined Championship side Hull City until the end of the season in order to gain first team experience.

[10] In order to gain further first team opportunities, manager Rafael Benítez loaned Peltier to League One club Yeovil Town on 31 July 2007 until 31 December.

[16] Although a right-back, Peltier played as a midfielder during an FA Cup match against Torquay United in November, but switched back to his original position for the club's following fixture against Gillingham a week later.

[16] On 21 January 2008, he joined Norwich City on trial, featuring in a reserve team fixture against Colchester United, but was not offered a contract by manager Glenn Roeder.

[19] He ended the season having made 38 appearances in all competitions, including his original loan spell, and won the club's Young Player of the Year award.

[16][20] In his second season with Yeovil, Peltier made 39 appearances in all competitions, scoring his only goal for the club in a 3–2 victory over Swindon Town on 20 December 2008.

[36] In his last game for the club, Peltier failed to gain promotion at Huddersfield after losing 3–0 to Peterborough United in the 2011 League One play-off final.

[41][42] On 6 August 2011, Peltier scored only goal on his league debut in a 1–0 victory over Coventry City, in the opening game of Leicester's 2011–12 season.

[43] However, the club struggled for form at the start of the season which lead to Eriksson's dismissal at the end of October having spent over £10 million on new signings.

[46] In July 2012, after the club signed Belgian right-back Ritchie De Laet, Leicester announced that Peltier was not part of Pearson's long-term planning.

[47] Former Leicester player Steve Walsh commented his belief that "his better performances came under Sven and I don't think Nigel saw the best of him", leading to him being made available for a transfer.

"[40] Having been made available, Peltier chose to return home from a pre-season training camp in Austria,[48] and this triggered transfer interest from his former club Huddersfield Town and Leeds United.

[40] Peltier made his competitive debut for Leeds playing at centre-back in the first game of the season against Shrewsbury Town in the League Cup on 11 August.

[56] Despite captaining Leeds during 2013–14 pre-season, and for the opening two games of the season, Peltier was replaced in the role by teammate Rodolph Austin who returned to the side against Leicester City on 11 August 2013.

Peltier attempted to back out of the move after being informed that Warnock was not going to be appointed and had hoped to join Bolton Wanderers instead,[63] who submitted a late bid to sign him.

[62] He was favoured in a central midfield position for Forest under caretaker manager Gary Brazil, making his debut in a 1–1 draw with Ipswich Town on 29 March.

[70] Despite interest from Forest, Bolton Wanderers and Blackburn Rovers,[68] on the same day, Peltier rejoined former club Huddersfield Town on a three-year deal.

On 7 August, he was named as the new club captain by manager Mark Robins, replacing Peter Clarke, who left at the end of the previous season.

[76] Signed as a replacement for John Brayford,[77] he made his debut for the club, a week later in a 2–0 loss to Derby County,[78] and went on to help Cardiff push away from a relegation battle and finished mid-table.

[79] The appointment of Paul Trollope in 2016 as Slade's successor threatened to displace Peltier from the side with the new manager favouring more attack minded full-back Jazz Richards.

[82] Peltier was part of the side that won promotion to the Premier League during the 2017–18 season, making 30 appearances for the club as they finished as Championship runners-up.

[84] He was dropped from the first team following the match with manager Neil Warnock favouring playing centre-back Bruno Ecuele Manga at right-back,[85] not making a league appearance for over a month when he suffered a shoulder injury during a 5–0 defeat to Manchester City on 22 September.

"[80] In March 2009, Peltier was shopping with fellow footballer Victor Anichebe in Knutsford when the pair were stopped by police officers after being accused of theft.