The Archbishop of Canterbury has led an anti-poverty march of hundreds of bishops.

The 670 Anglican bishops from across the world are attending the three-week Lambeth Conference in Canterbury.

On Thursday they marched in London, led by Dr Rowan Williams, and called on governments to keep their promise to halve poverty by 2015.

The bishops were joined by up to 1,500 faith leaders, diplomats, politicians and heads of charity on the march.

Prime Minster Gordon Brown told a rally in the courtyard of Lambeth Palace: "This is one of the greatest public demonstrations of faith that this country has ever seen.

"You have sent a symbol, a very clear message with rising force that poverty can be eradicated, poverty must be eradicated and if we all work together for change poverty will be eradicated."

Dr Williams says that won't just affect those who are already poor.

"As the world grows smaller, the truth is that the suffering and the neeed of anyone in our global community is going to be sooner or later the suffering and the need of everyone in our global community," he said.