[1] His professional career began with West Ham United in April 2000 when he joined the club from Walton & Hersham for a fee of £40,000.

He played a full season for the South Yorkshire side, before moving again on a free transfer to Gillingham in July 2005, and then signing for Swansea City in January 2006 after the Gills suffered financial problems.

[3] On 31 December 2007 Williams joined Peterborough United for the third time, initially on an emergency loan to make him available for the match on New Year's Day, for which he was an unused substitute.

[4][5] On 9 November 2009, Williams rejoined Championship side Queens Park Rangers on a short-term loan deal, with a possible view to sign permanently in the January transfer window.

Williams joined former boss Darren Ferguson at Preston North End on loan for the rest of the season.

[15] In February 2014, Williams was one of a number of foreign signings made by Vanuatu club Amicale to strengthen their team ahead of the 2013–14 OFC Champions League campaign.

[22] On 3 September, during an Essex Senior Cup first round win away to Halstead Town, he seriously injured a hand after smashing a home dressing room window after he had received a red card.