London: Details of every email sent and website visited by people in Britain are to be stored for use by the state starting on Monday as part of what campaigners claim is a massive assault on privacy.

A European Union directive, which Britain was instrumental in devising, comes into force which will require all internet service providers to retain information on email traffic, visits to websites and telephone calls made over the internet, for 12 months.

Police and the security services will be able to access the information to combat crime and terrorism.

Hundreds of public bodies and quangos, including local councils, will also be able to access the data to investigate fly-tipping and other less serious crimes.

It was previously thought that only the large companies would be required to take part, covering 95 per cent of Britain's internet usage, but a Home Office spokesman has confirmed it will be applied "across the board" to even the smallest company.

Privacy campaigners say the move to force telecoms companies to store the data is the first step towards the controversial central database at the heart of the Home Office's Intercept Modernisation Programme, which will gather far more detailed information on Britain's online activities.

Simon Davies, director of Privacy International, said: "I don't think people are aware of the implications of this move. "It means that everything we do online or on the phone will be known to the authorities.

"They are using this to produce probably the world's most comprehensive surveillance system.

"This is a disgraceful example of the covert influence that Brussels has across our freedoms and liberties. The entire episode has been marked by a litany of secret dealings, vicious political games and a complete absence of transparency."