Thousands of streets across the country will become no-go zones for teenage yobs and other troublemakers as part of a massive summer clampdown by police against anti-social behaviour.

More than 100 special zones have been mapped out as part of a zero-tolerance crackdown against drug-taking, underage drinking and alcohol-related violence in cities throughout England. In some areas curfews will be imposed, allowing police to clear groups of youths from the street after 9pm.