Dexter is a batting all-rounder who captained Middlesex to the LV= County Championship Division Two title in 2011.
He was born in South Africa but holds a British passport and was a late-season signing for Kent in 2005.
Dexter had been playing as overseas professional for Sudbury and had just returned to South Africa for his 21st birthday party when he was unexpectedly called up by Kent.
He made his debut in the crucial championship clash with Nottinghamshire at Canterbury, which Kent needed to win to keep their title hopes alive, and hit an unbeaten 79 in the first innings.
Dexter also dismissed Australian opener David Hussey with the first ball of the second innings but he could not prevent a 214-run defeat which saw Notts clinch the title.
In his two championship appearances and two totesport League games he did enough to earn a contract for 2006 and 2007 at Kent.
In 2008 Dexter suffered mixed fortunes and was loaned to Essex. He turned down a three-year contract with Kent in September, instead opting to leave the club.
He scored two hundreds in the 2009 championship as he reached 709 runs from 19 innings at an average of 41, but Middlesex struggled despite his best efforts.
Dexter was handed the captaincy in 2011 and immediately led Middlesex to the Division Two title, although the next season he handed the four-day reins over to Chris Rogers to concentrate on his batting.
Dexter subsequently opted to relinquish the Middlesex captaincy in all forms of the game.