British National Party leader Nick Griffin claimed there would be "blood all over the streets" in a speech intended to stir up racial hatred, a court heard yesterday.

Griffin, 45, and fellow party activist Mark Collett, 24, face a series of race-hate charges arising out of speeches featured in an undercover BBC documentary on the party.

The jury in the trial at Leeds Crown Court saw a 25-minute video in which Griffin said "second generation Pakistanis from places like Bradford" would set off bombs in British cities.

In the video, which was filmed by undercover reporter Jason Gwynne at a meeting at Morley Town Hall in Leeds on May 5, 2004, Griffin could be seen standing on a stage in front of a desk draped with the Union Flag.

Referring to a lack of differences between political parties in the UK, Griffin said: "We give people a choice, and that's what really scares them, and that's what they can't hack.

"Given a choice, people, huge numbers of people, growing numbers of people, are going to back us, and they look at that and they look at this hugely unstable situation they have created in this country of ours, where we all know that sooner or later there's going to be Islamic terrorists letting off bombs in major cities, and it might not be London, it could just as easily be the White Rose Centre (a Leeds shopping centre).

"In fact, it could be easier that, because it's a softer target, everyone's expecting it in London and these people do unexpected things, don't they? Bradford presumably won't be a target, but the White Rose Shopping Centre could be.

"When it happens in this country, it's going to be done by asylum seekers or it's going to be done by second generation Pakistanis living in somewhere like Bradford."

Griffin told the audience that there was going to be a "backlash" and urged them to vote for the BNP so the backlash could be political.

He said: "It hasn't worked, this multi-racial experiment, and now we want a debate about how we're going to reverse it, how we're going to undo at least some of the damage, how we're going to stop it getting any worse.

"If they manage to stop us, through all their gerrymandering, and then when the British people finally say right, that's it, enough is enough, there is going to be blood all over our streets."

The film was one of six featuring speeches by Griffin and Collett, shot as part of the BBC documentary The Secret Agent, which form the basis of the prosecution case.

Griffin, of Llanerfyl, Powys, denies two counts of using words or behaviour intending to stir up racial hatred and two of using words or behaviour likely to stir up racial hatred.

Collett, of Swithland Lane, Rothley, Leicestershire, denies four counts of the first offence and four of the alternative.

Earlier, two speeches made by Collett were played to the jury. In the first, at the Crossroads pub in Keighley on March 31, 2004, he said: "It's Asian on white.

"These gangs of Asian lads aren't going mugging Asian grannies, they're not going out throwing petrol bombs at Asian-owned shops, they're not going out raping Asian woman and they're certainly not going down the local mosque and noncing little Sanjita, they're doing it to white people."

The trial was adjourned until Friday to allow time for legal issues.