As a player, he was a forward who notably played in the Premier League for Queens Park Rangers and Charlton Athletic.
Allen joined Tottenham Hotspur as a youth team coach in 2013, having previously worked as a PE Teacher and sports co-commentator.
[5] Recruited by Colchester manager Mick Wadsworth,[2] Allen made his debut for the U's in a 1–1 home draw with Reading on 27 February 1999, before being replaced by Steve Forbes after 68 minutes.
[5] Allen joined Peterborough United on trial in the summer of 2002, where he featured in a friendly against Rushden & Diamonds.
[15] Allen scored three goals in 11 games for the Posh[5] but Peterborough chairman Barry Fry confirmed that his short-term contract would not be renewed when it expired in December 2002.
[17] He made eight appearances in the league for the club and scored one goal against Cambridge United,[18] as he was released at the end of the 2002–03 season.
[23] Following his release from Hornchurch, Allen quickly joined Conference South side Ford United, who would later change name to become Redbridge.
[2] After retiring from the game in 2004, Allen became a PE teacher and became an academy coach at Tottenham Hotspur, where he is running the under-15 side.
[2][24] In addition to his coaching, Allen has worked in the media, providing co-commentary for Sky Sports Football First programme and also for radio coverage.