 Having risen through the youth academy at Reading, Hamer went on loan to Crawley Town for the 2006–07 season, where he missed just one league game and was named as Player of the Season.On 4 July 2007, Hamer signed a new one-year contract to keep him at Reading until the end of the 2007–08 season.He joined Brentford in an initial one-month loan deal on 11 August 2007, which was subsequently extended to 14 October 2007.