Anti-war protests are taking place across Britain Saturday to coincide with the International Women's Day.
The organizers estimated about 20,000 people are marching in Manchester, northwestern England.
It is Saturday's largest street demonstration in Britain and isalso believed to be the biggest one in Manchester for 180 years, according to a local report.
Organized by the Greater Manchester Coalition to Stop the War, marchers are demanding "no more blood for oil" in protest against war on Iraq.
In leaflets handed out to publicize the march, they said Prime Minister Tony Blair's determination over the conflict indicates heis showing the country's democracy "is just a sham."
Meanwhile, protests are also seen in Nottingham, Sheffield, Barnsley in south Yorkshire, Berkhamsted in Hertfordshire, Chichester in West Sussex and Bridgend in south Wales.
"It's women and children who are predominately the victims of war," said Stop the War Coalition spokesman Andrew Burgin.
The latest poll showed that British women are much more opposedto a war in Iraq than men and they strongly disapprove of Prime Minister Blair's handling of the crisis.
The gender gap is a consistent feature of all the polling over Iraq in the past months in the country.