[9] On 24 August 2009, Leicester signed Kermorgant on a short-term contract until January 2010,[10] beating French club Stade Malherbe Caen for his signature.

[20] On 13 September 2011, Kermorgant signed a two-year contract at Charlton Athletic,[21] linking back up with his former first team coach at Leicester, Chris Powell.

[22] He then continued as the preferred striker to partner Bradley Wright-Phillips, and his aerial ability and consistent performances attracted interest from Celtic in January 2012.

Kermorgant won the League 1 title with Charlton Athletic on 5 May 2012, rounding off the season with a goal from an acute angle in a 3–2 victory against Hartlepool.

[31] On 1 March 2014, Kermorgant celebrated his full debut for Bournemouth by scoring his first goal for the club and his first ever hat-trick in a 5–0 win against Doncaster Rovers.

[32] In Kermorgant's first full season at Dean Court he helped them claim the Championship title winning promotion to the Premier League for the first time in the club's history.

[38] On 1 November 2017, Reading announced that Kermorgant had put off his retirement plans at the end of the season to sign with the club a new contract covering the summer of 2019.

[40] After training with Vannes OC since the start of the 2018–19 season, Kermorgant signed a contract with the French side Championnat National 2 on 2 October 2018.

[42] Kermorgant was included in the Brittany national football team for the friendly match against FIFA member Mali on 28 May 2013.