The Government is to create a global database of hate preachers accused of fomenting or promoting terrorism so they can be more easily kept out of Britain or deported.

The move was announced today by Charles Clarke, the Home Secretary, as part of a raft of anti-terror measures including three new criminal offences that will be rushed through Parliament with cross-party support after the July 7 suicide bombings in London.

Mr Clarke said the database could prompt the deportation of well-known radical Muslim preachers like the Syrian-born Omar Bakri Mohammed.

In a separate developement, Tony Blair announced that the UK might host an international conference on how best to tackle the terrorist threat.

The Prime Minister also said that the Government would consult with police and security forces on whether a long-standing ban on using evidence from phone-tapping in courts could be lifted - something that the Government had previously ruled out.

Mr Clarke told the Commons that the database of those who have demonstrated "unacceptable behaviours" would include those who preached intolerance, or ran websites or wrote articles that encouraged extremism.

Anybody on the database seeking to enter the UK would have their case referred to ministers with a view to possible exclusion from the country.

Mr Clarke said he had concluded his powers to exclude people from Britain needed to be used "more widely and systematically", both for foreign visitors and people already living here. He also made clear the powers to remove people would apply to visitors, asylum applicants and those who had already won asylum.

He told MPs: "In the circumstances we now face, I’ve decided that it’s right to broaden the use of these powers to deal with those who foment terrorism or seek to provoke others to terrorist acts.

"To this end, I intend to draw up a list of unacceptable behaviours which would fall within this. For example, preaching, running a website or writing articles which are intended to foment or provoke terrorism. The list will be indicative rather than exhaustive."

There is growing anger over the comments of Omar Bakri Mohammed, who uses a website to propagate his anti-Western views and who said yesterday that the British Government and public shared some of the blame for the July 7 attacks on the capital.

In his statement to MPs, the Home Secretary said: "I will follow the approach I have set out today in the case of Sheikh Omar Bakri Mohammed and other individuals whose names are in the public domain."

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