 After being isolated from the Huddersfield squad at the start of the following season, Simpson joined Oldham Athletic on loan on 10 September 2011.Simpson made his debut for the club coming on as a substitute at the start of the second half against Stevenage.Simpson scored his first goal for the club on his 13th appearance, with a free kick that was fumbled by the Burton Albion goalkeeper in a 3–1 win for the Latics in the first round of the FA Cup.