A Poland fan waits for the start of the Group A match against Russia in Warsaw. : Photos: Fans add colour to Euro 2012

Ireland fans cheer before Group C match against Croatia in Poznan. : Photos: Fans add colour to Euro 2012

A Swedish supporter awaits the start of the Group D match against Ukraine in Kiev. : Photos: Fans add colour to Euro 2012

Spanish fans cheer outside PGE Arena before their team's first match, against Italy, in Gdansk. : Photos: Fans add colour to Euro 2012

Russian fans celebrate during their Group A match against Czech Republic in Wroclaw. : Photos: Fans add colour to Euro 2012

A Czech Republic supporter cheers her team on against Greece in Wroclaw. : Photos: Fans add colour to Euro 2012

Polish riot police stand guard during clashes with fans before the Group A match between Poland and Russia in Warsaw. REUTERS/Kai Pfaffenbach : Photos: Fans add colour to Euro 2012

A German supporter gets into the spirit before the match against Netherlands in Kharkiv. : Photos: Fans add colour to Euro 2012

Fans watch a public screening of the Germany v Netherlands match at the Fan Mile in Berlin. REUTERS/Thomas Peter : Photos: Fans add colour to Euro 2012

A Denmark fan shows his support before the match against Portugal in Lviv. : Photos: Fans add colour to Euro 2012

Danish fans react after the Portugal match in Lviv. : Photos: Fans add colour to Euro 2012

Police patrol with dogs in the fan zone in Kiev. : Photos: Fans add colour to Euro 2012

Netherlands supporters react at the end of their team's Group B match against Germany in Kharkiv. : Photos: Fans add colour to Euro 2012

A Dutch fan shows his disappointment after his team's match against Germany in Kharkiv. : Photos: Fans add colour to Euro 2012

An England fan has a drink in Donetsk, before his team's first match, against France. : Photos: Fans add colour to Euro 2012