Police are urging football supporters not to behave "recklessly" tonight as the country unites to cheer on England in the World Cup semi-final.

It comes amid a number of incidents of anti-social behaviour, including public disorders and a damaged ambulance.

There is set to be more police on the streets this evening so police can "ensure everyone remains safe".

Chief inspector Colleen Lavery, based at the Joint Operations Unit, said: "We are working to ensure that our local communities remain safe to watch the game.

"Although the vast majority of supporters will enjoy the game responsibly, it only takes a few individuals to spoil the atmosphere for everyone else.

"There have been a number of incidents in the Thames Valley over the last few weeks ranging from an ambulance being damaged through to public disorder.

"This is a peak period of demand for the emergency services. Please do not take critical emergency resources away from those who really need it by behaving recklessly.

"We would like to remind everybody to drink responsibly and that anti-social behaviour will not be tolerated. Dispersal notices will be issued against offenders where appropriate, which could result in them missing the game."

To report any incidents of anti-social behaviour, call Thames Valley Police on 101 or call Crimestoppers anonymously on 0800 555 111.

Only call 999 in an emergency where there is an immediate threat to life.