Hard working midfielder who returned to the club for a shortlived third time in November 2015. First signed for Aylesbury in summer 2010 after a season in the Southern League with Leighton Town, he then went on to have very brief spell with town neighbours Aylesbury FC before returning again midway through the 2011/12 season.

With a great passing range and good engine, Warren also never shirks a challenge and established himself as a key part of the squad during his time with the Ducks. Most effective in central areas, but also capable of playing out wide when required to do so.

Moved on to play at Ampthill Town after Aylesbury, before moving with manager Craig Bicknell to Leighton during the summer of 2014, but Berkhamsted later in the season after a short stint with Stony Stratford Town, and has also appeared for New Bradwell St Peter.

Began his career with Stevenage Borough and also previously played for Brackley Town.