Birmingham clinched automatic promotion, and an immediate return to the Barclays Premier League, with a 2-1 win at Reading. Reading must now content themselves with a place in the Coca-Cola Championship play-offs.
They will be joined by Sheffield United who were held to a scoreless draw at Crystal Palace.
Burnley join them in the play-offs following a 4-0 win over Bristol City, and near neighbours Preston beat QPR 2-1 to grab the last play-off spot by virtue of having scored one more goal than promotion rivals Cardiff.