Date of Birth 7th January 1989
Though born in London, Addison moved to Nottingham at the age of three,where he was spotted by scouts from the Derby County youth system.
Derby's poor start to the 2008–09 season saw Addison given a chance to cement a place in the first team and he was given his first start of the campaign in the 1–0 League Cup win at Preston on 26 August 2008.
On 24 June 2011, Addison joined fellow Championship club, Barnsley on six-month loan deal. Addison was called up to the England under-21 for the team's UEFA U21 European Championship Qualification games against FYR Macedonia and Greece on 27 August 2009.Addison came on as a substitute against Greece to earn his first international cap.