Fathers 4 Justice campaigner Ron Davis was made to wear a protective suit after flour-filled condoms were hurled at Tony Blair because police feared they contained poison.

He also had his hands wrapped because officers feared he could be contaminated and spread chemical or biological agents.

Bow Street Magistrates' Court was told yesterday Davis, from Findon, near Worthing, had had a VIP ticket to the Commons.

Davis, 48, who denies a charge of disorderly behaviour, is alleged to have blocked the path of a doorkeeper and unfurled a banner.

The House of Commons was evacuated after the flour bombs were thrown from the public gallery during Prime Minister's Questions on May 19.

Police, thinking it could be a terrorist act, were dispatched to the building in protective suits and gas masks.

Karen Jones, prosecuting said, Davis stood up with a banner, which read "flower power for dads".

Guy Harrison then launched three condoms filled with purple flour into the chamber.

Harrison, from Ashurst, West Sussex, had won the VIP tickets in a charity raffle from Baroness Golding.

CCTV evidence was shown of the condoms hitting Mr Blair on the back and bursting.

Davis, who has two children, does not deny his involvement but says he did not throw any condoms.

After the event, police found a flour-filled condom in his jacket pocket.

Mrs Jones said: "Regardless of who did what, their combined conduct amounted to behaviour that was disorderly."

The pair were protesting on behalf of Fathers 4 Justice, who use headline grabbing techniques in their bid for equal rights for fathers in family courts.

Davis says he has not seen his children for five years and Harrison says he is denied access to his daughter.

The men were arrested under the Terrorism Act but later charged under the Public Order Act.

DC Keith Lipscombe said police quizzed Davis on how the pair smuggled the condoms into the Commons to learn how to improve security.

The court heard evidence from ten witnesses yesterday, including Baroness Llinos Golding of Newcastle-Under-Lyme, said she had invited the men after Mr Harrison won the tickets, which entitled them to lunch with her and access to Prime Minister's Questions.

Lady Golding said: "I noticed there was a noise and people shouting. Then I saw Mr Davis holding up a poster. I couldn't read it because it was upside down.

"Then Mr Harrison came to the front and was lifting his arm and shouting and I saw him throw the flour. I was shocked and devastated guests of mine could behave so badly."

Kenneth Jones, one of the doorkeepers to the public galleries, said he feared for people's lives.

Harrison, who was fined £600 in May after pleading guilty to threatening and abusive behaviour, had told him and police officers the powder was only flour with food dye.

The court heard when Davis was asked by police if the powder was dangerous, he said: "No, unless you have a flour allergy."

In police interviews he insisted the stunt was a peaceful protest to highlight the plight of fathers denied access to their children.

The hearing will continue tomorrow.

Spider-Man protester David Chick, from Burgess Hill, appeared before Camberwell Magistrates in London yesterday charged with causing a public nuisance.

He was arrested after spending more than 18 hours on the London Eye on Saturday.

His case was adjourned until October 25.

They were changing the guard as usual at Buckingham Palace today while the future of those in charge of security came under scrutiny following the latest Fathers 4 Justice stunt yesterday.

The world-famous ceremony was going ahead in front of the palace but across St James's Park serious discussions were taking place as Britain's top policeman, Sir John Stevens, examined a report into the embarrassing security blunder.

Fathers' rights activist Jason Hatch, dressed as Batman, climbed over the walls of the Queen's London residence and staged a five-hour protest on a ledge.

While he spent a day at Charing Cross police station, the fallout of the incident was not allowed to interrupt one of the oldest and most familiar of royal ceremonies - the Changing of the Guard. Tours around the royal residence, which is open to the public during the summer, continued.

The palace's director of security liaison, Brigadier Jeff Cook, who was taken on after a major inquiry into royal security, will have to deal with the aftermath of the lapse in protection.

A palace spokeswoman said: "Our director of security liaison will be discussing yesterday's incident with the police as part of their investigation."

Hatch was aided in his demonstration to promote awareness of fathers' rights by 48-year-old Dave Pyke, who was dressed as the superhero's sidekick, Robin.

Both men, from Cheltenham in Gloucestershire, remained in custody today.

The Queen, who is on her summer break at Balmoral in the Scottish Highlands, is being kept informed of goings on at her London home.

Sir John, the Metropolitan Police Commissioner, said that if Hatch had been carrying a bomb he would have been shot by armed police.

Home Secretary David Blunkett said not all security systems had "worked perfectly" yesterday.