Martin Allen, aka "Mad Dog", is one of the more colourful managers plying their trade in the Football League, and has plenty of experience at this level both as a player and a coach. Allen has managed a whole host of clubs, and was last in charge of Non-League side Chesterfield.
Allen's first job in management came with then non-league Barnet in 2003, which was followed by spells at Brentford, MK Dons, Leicester (for just four games after clashing with Milan Mandaric), and then Cheltenham, before returning to Barnet for all of three games in 2011.
Allen jumped shipped to Notts County, but returned to manage the Bees on a short-term contract the following year, departing once again left after three games, in order to manage Gillingham.
Allen led the Gills to the League Two title in 2012/13 - the club's first title in a whopping 49 years - but was sacked in October the following season after a poor start. Now in his fourth spell at Barnet Allen is enjoying life in League Two, having led the Bees up into the Football League, as Conference champions, in 2014/15.