One of England's worst incidents of football hooliganism occurred when supporters of Luton Town and Millwall rioted before a match at Kenilworth Road stadium.

Football hooliganism, also known as football rioting, constitutes violence and other destructive behaviors perpetrated by spectators at association football events. Football hooliganism typically involves conflict between pseudo-tribes, formed to intimidate and attack supporters of other teams. Certain clubs have long-standing rivalries with other clubs and hooliganism associated with matches between them can be more severe. Conflict may arise at any point, before, during or after matches and occasionally outside of game situations. Participants often select locations away from stadiums to avoid arrest by the police, but conflict can also erupt spontaneously inside the stadium or in the surrounding streets. In extreme cases, hooligans, police and bystanders have been killed, and riot police have intervened. Hooligan-led violence has been called "aggro" and "bovver".

Luton Town Football Club is a professional football club from Luton, Bedfordshire, England. The club currently competes in EFL League One, the third tier of the English football league system. Nicknamed "The Hatters", Luton have played their home games at Kenilworth Road since 1905.

Millwall Football Club is a professional football club in Bermondsey, South East London, England. They compete in the EFL Championship, the second level of English football. Founded as Millwall Rovers in 1885, the club has retained its name despite having last played in the Millwall area of the Isle of Dogs in 1910. From then until 1993, the club played at what is now called The Old Den in New Cross, before moving to its current home stadium nearby, called The Den. The traditional club crest is a rampant lion, referred to in the team's nickname The Lions. Millwall's traditional kit consists of dark blue shirts, white shorts, and blue socks.

The 1985 Luton riot occurred before, during and after a 1984–85 FA Cup sixth-round football match between Luton Town and Millwall on 13 March 1985 at Luton Town's Kenilworth Road ground in Luton, Bedfordshire, England. It was one of the worst incidents of football hooliganism during the 1980s, and led to a ban on away supporters by Luton Town which lasted for four seasons. This itself led to Luton's expulsion from the Football League Cup during the 1986–87 season. The club also began to enforce a membership card scheme, which Margaret Thatcher's government attempted to have adopted at grounds across England. Kenilworth Road was damaged, along with the surrounding area, and a year later was converted to an all-seater stadium.