The competition is effectively the play offs to determine the British champions for the season. They are held after the regular season whereby the positions in the league ladder determine play off slots.
There were two instances of an early championship; the first was in the 1929-30 British Ice Hockey season which was the inaugural season of organised league ice hockey in Britain. The championship was won by London Lions when known as the Patton Cup. The second instance took place during the 1959–60 British National League season.
From 1966 it became an annual event when known as the Icy Smith Cup and then after 1982 it had several sponsors and names including the Heineken Championship and latterly as the Sekonda Playoff Championship. Some contests were only recognised as representing the Championship retroactively.