A wily off-spinner by trade, Tredwell signed a full-time contract with Kent in 2002 and quickly established himself as a regular in all formats.
Tredwell won a place in the England one-day international squad for the tour of New Zealand in early 2008, but did not play.
He helped Kent to championship promotion in 2009, taking 69 first-class wickets, and was rewarded with an England call-up as cover for Graeme Swann on the tour of South Africa.
Swann recovered from injury to deny Tredwell an international debut, but both featured in the final Test of the Bangladesh tour when the Kent man took six wickets in a series-sealing win.
He enjoyed another solid domestic season in 2010 and was named in the Performance Programme squad to tour Australia over the winter.
Tredwell was also selected for the limited-overs series that followed the Ashes, as well as being picked in England's 15-man squad for the 2011 World Cup.
He featured in two matches, helping England qualify for the quarter-finals with impressive figures of 4-48 from 10 overs against West Indies.
Tredwell returned to the England Test fold the following year for the series in Sri Lanka, although he did not play.
He had to wait for more than a year for his next senior international appearance, in an ODI versus Australia, and later that summer took five wickets in three ODIs against South Africa while Swann was rested.
That November he was named Kent captain for the 2013 season, replacing Rob Key, before featuring in limited-overs internationals in India and New Zealand later that winter.
He made four appearances during the 2013 Champions Trophy, taking 3-19 against South Africa in the semi-final, as England finished runners-up to India and was then named as England's primary spinner for the NatWest Series against Australia, with Swann again rested.