Berks, Bucks & Oxon Premier is an English rugby union league featuring teams from Berkshire, Buckinghamshire and Oxfordshire. Promoted teams tend to move up to Southern Counties North while relegated teams drop to the Berks/Bucks & Oxon Championship. The league was set up originally for teams from Buckinghamshire and Oxfordshire only but expanded to include teams from Berkshire (who had been playing teams from Dorset and Wiltshire) from the 2001-02 season onwards.