 Complete the following phrase:  English football had gone through a number of serious incidents related to football hooliganism throughout 1985. In March, a major riot had occurred during an FA Cup tie between Luton Town and Millwall; on the final day of the English domestic season, the Second Division game between Birmingham City and Leeds United was marred by the death of a 14-year-old Birmingham fan during rioting before the game, while just two days after Scotlands qualifying game in Iceland, the Heysel Stadium disaster had occurred prior to the 1985 European Cup Final, which had led to English clubs being banned from European competition by UEFA. Although this did not affect England in international football though there were discussions in regards to their participation in the 