Nathaniel Lawrence Knight-Percival (born 31 March 1987) is an English professional footballer who plays as a defender for Tranmere Rovers.
He started his career at Histon, progressing through the youth ranks and eventually becoming a regular in the first team. He won two promotions during his six years with Histon, helping them to the Southern League Premier Division title in 2004–05 and the Conference South title in 2006–07. He was sold to Conference Premier rivals Wrexham in April 2010; in doing so he resigned his position in a car factory to become a full-time professional footballer. He played in two unsuccessful play-off campaigns and was named in the 2011–12 Conference Premier Team of the Year. He moved into the Football League by signing for Peterborough United in May 2012.
He overcame the three division gap to establish himself in the first-team at Peterborough, though the club were relegated out of the Championship at the end of the 2012–13 season. He won the Football League Trophy with Peterborough in 2014. He joined Shrewsbury Town on a free transfer in May 2014 and was promoted out of League Two at the end of the 2014–15 season. He was appointed as club captain in January 2016, though took a free transfer to Bradford City in July 2016. He made 135 competitive appearances for Bradford over the course of three seasons, though was released following relegation out of League One in May 2019. He spent the 2019–20 season with Carlisle United.