12. Middlesbrough – Ben Gibson
Debut: April 2011
Ben Gibson is still only 23 years of age but is Middlesbrough’s longest serving current player after making his debut as a teenager towards the end of the 2010/11 Championship season.
The home-grown centre-back has been a regular in the team since 2013 after loan spells at Plymouth, York, and Tranmere (twice). He was actually an FA Trophy winner with non-league York during his short time there in 2012.