MILLWALL will face Southend in League One next year after the Shrimpers beat Wycombe in the League Two play-off final at Wembley.
Southend's penalty shoot-out victory over the Chairboys at the national stadium on Sunday sees them join Burton, Shrewsbury and Bury in the third tier.
Wigan and Blackpool join Millwall in League One following relegation from the Championship.
Swindon, meanwhile, will compete again in League One, having failed to gain promotion to the second tier via in the League One play-off Final on Sunday, losing to 4-0 to Preston.
How the bookies see it – odds to win the title next season:
Sheffield United 13/2
Port Vale 40/1