 On 1 September 2009, he scored his first goal for the Terriers, the second goal in Town's 2–1 win over Rotherham United in the Football League Trophy.Most of Simpson's first season with the Terriers was disrupted by injury.Simpson joined Brentford on loan for the entire 2010–11 season on 6 August 2010, making 18 starts, scoring 8 goals.