 Slater was once again a key member of the Chasetown team, playing 33 games in the 2008–09 season, as they reached the play-off final, only to lose out 1–0 to Nuneaton Town.He played another 35 league games in 2009–10, helping the club gain promotion out of the Northern Premier League Division One South via the play-offs with a 1–0 win over Glapwell.He remained at the club throughout 2010–11, as the club competed at the seventh level of the English football league pyramid for the first time in its history.