Peaceniks and pensioners mounted noisy protests on the Labour conference - the latest sections of society to rage against Blair.

Naked demonstrators and an 11-year-old victim of the Iraq war added their chants to those of the hunt lobby, anti-war lobby and fair trade campaigners, united in their despair at the Government.

Lines of police officers were once again on hand to keep the peace on the seafront following the trouble at Tuesday's huge Countryside Alliance march.

More than 250 people calling on the Government to put more cash into failed company pension schemes were the first to converge on the Brighton Centre.

About a dozen female members of the group put on fake breasts, claiming successive governments had made a "boob" of the pensions issue, and waded into the sea.

Their male counterparts stripped down to reveal comedy fake bottom boxer shorts. They held up a banner saying: "Bum deals from bum governments."

Alan Marnes, from campaign group Pensions Theft, said: "We've been stripped of our pensions and we feel the Government has made yet another boob in the way it has been handled."

Up to 100,000 workers in the UK are thought to have lost pensions owed to them by companies going bust or simply not having enough money when it comes to pay out.

The Government has offered £400 million over 20 years in financial assistance but workers say that is not enough.

Eric Peacock, who worked for engineering firm Federal Mogul in Bradford, said: "The Government encouraged us to invest in these schemes and said they were safe and guaranteed. They were not. We were lied to and robbed of our pensions and we want what is rightfully ours."

Dave Cornelius, who worked for an engineering firm in Derby for 40 years, added: "It's legalised daylight robbery. Never mind protecting the foxes - why can't the Government protect us?"

Actor and TV presenter Tony Robinson lent his weight to the protesters' campaign, saying: "It's easy to talk about families and children and people paying mortgages but these people have made an enormous contribution to our lives. We must make this issue central to our policies."

Later, 400 anti-war protesters led a peaceful march on the conference, mainly calling on Labour to end Britain's occupation of Iraq.

Among the demonstrators was an 11-year-old Iraqi girl who lost her leg when a bomb fell on the Basra house where she and her family had fled.

Zaynab Taresh lost 17 members of her family, including her mother, in the blast last March. She now has a false right leg and was in Brighton to raise funds for a new clinic in Iraq for those who have lost limbs.

Wearing a red T-shirt bearing the words "No More Land Mines", Zaynab, speaking through an interpreter, said: "I woke up and my body was burning.

"I was taken to hospital but they told me the operation on my leg wasn't going to work and they would have to cut off my leg."

The youngster, who was waving a Palestinian flag, had a stark message for Mr Blair.

She said: "He should get out of my country. They have done nothing for Iraq.

"Before the war things were better for me. I could play in the street with my friends. Now it is too dangerous. Bombs are going off all the time and people are getting kidnapped."

She joined the protesters who braved the rain to march alongside mothers with pushchairs, pensioners with dogs and students on bikes.

Some protesters chanted anti-war slogans or waved placards bearing messages such as: "Tony get your head out of Bush's bum, and see the LIGHT" or "Blair Out, Democracy In".

Brighton and Hove city councillors Keith Taylor and Simon Williams also took part.

Coun Taylor said: "This is going to be a defining moment in Tony Blair's premiership."

Sue Baumgardt, from Hove, said: "Although we can all say Saddam Hussein was a despot, the world is full of despots. He was picked on for the oil.

"The American government and our Government were prepared to lie to get us into the war."

Once outside the Labour Party conference venue, protesters faced two lines of about 50 police officers and demanded the withdrawal of British troops from Iraq.

The protest finished with a one-minute silence.

All the protesters dispersed without incident as Mr Blair praised the work of the police to maintain security throughout the conference.