The Thurrock Football Club was founded in April 1985 but until the start of season 2003-04 had played under the name of Purfleet Football Club. The first competitive game played by the Club was on 24 August 1985 against Canvey Island Reserves in Division One of the Essex Senior League and resulted in a 3-0 win.
An application was made to join the Isthmian League (now the Ryman League) and by the rules of the ‘Pyramid’ would be conditional on the Club finishing in the top three. Purfleet not only won the League but also achieved the double retaining the League Cup by defeating Canvey Island 2-1. In their two seasons playing in the Essex Senior League Cup, Purfleet had the distinction of never having lost a game.
In 1991–92 the club won the division, and were promoted to Division One. Two seasons later they finished second, and were promoted to the Premier Division. In 2003 the club changed its name to Thurrock, and after finishing third in the league at the end of the 2003–04 season, in which they also won the league cup and the Essex Senior Cup became founder members of the Conference South.
In the club's first season in the new league, they qualified for the promotion play-offs but were knocked out by Eastbourne Borough. However, they did win the Essex Senior Cup for a second successive season. In 2008-09 the club finished in the relegation zone, but were reprieved after Team Bath resigned from the league. In 2010-11 the club again finished in the relegation zone, but were reprieved after Rushden & Diamonds were expelled from the Conference National league hence Southport were not relegated from the Conference National.
Essex Senior League
League Cup Winners 1986–87, 1987–88
Division Two Champions 1991–92
League Cup winners 2003–04
Essex Senior Cup
Winners 2003–04, 2004–05
performance: Third in the Conference South, 2004–05
Best FA Cup performance: First round proper, 2003–04, 2004–05
Best FA Trophy performance: Fourth round, 2004–05
Best FA Vase performance: Fourth round, 1990–91.