A £330m boost to the UK's anti-terrorism effort will be spent on equipment capable of detecting radioactive material being smuggled through Britain's ports.
The money - earmarked in Gordon Brown's 2003 Budget - will also be used to upgrade testing facilities for substances capable of being used in a chemical or biological terror attack.
Home Secretary David Blunkett was quick to welcome what he labelled a "boost in the fight against terrorism".
He said: "It will fund a range of counter-terrorism projects which will help protect the community, reinforcing the importance government attaches to
ensuring safety and security for the public."
"The Budget sends out a strong message - the UK is serious about protecting our borders and doing all we can to prevent terrorist actions."
The £330m will be spent over a three year period by three department: the Home Office, the Cabinet Office and the Department of the Deputy Prime Minister.
Further details of the way the money will be allocated are due to be released at a later date but it is thought there will be cash for anti-terrorism training and equipment for the emergency services.
Mr Blunkett said: "We are already doing a great deal in this area and this will strengthen our abilities still further, building on an above-inflation
budget for the police and the extra £87m funding for counter-terrorism we announced in last year's Budget."