Career
Crockett started his professional career at Bath. He was called into the England Saxons squad to face Italy A in Ragusa, Sicily on 9 February 2008. He was appointed joint captain (with Michael Lipman) for Bath in the 2008/9 season
Crockett resigned from Bath along with co-captain Michael Lipman, and Andrew Higgins on 1 June 2009 in controversial circumstances amid allegations of refusing to take drug tests which the players deny.
The RFU announced on 17 June that they would face an RFU disciplinary panel charged with "conduct prejudicial to the interests of the game".
Crockett received a nine-month ban. On 4 December 2009, it was announced that Crockett had signed a contract with Bristol Rugby which will last until the end of the 2009/10 season.
Crockett joined Bristol for training in January but, due to the ban, was unable to play a competitive game until 1 March 2010. Crockett signed for Worcester Warriors on 2 June 2010 on a two-year deal.
In 2012, it was announced Crockett would leave Worcester Warriors at the end of the season.
On 23 May 2012, Crockett signed for Newcastle Falcons on a two-year contract from 2012-2013 season. On 20 May 2014, Crockett announced his retirement from professional rugby.