As Occupy Wall Street protests in the US continue, Londoners are doing their bit to challenge "social and economic inequalities and corporate greed".

Hundreds of people have spent the last few days and nights camping outside St Paul's Cathedral in the British capital, where they initially had the backing of church leaders.

Church officials now say they are concerned the vigil poses a danger to health and safety. They have closed the church and will keep it shut until the protesters leave - something protesters say is not going to happen anytime soon.

Al Jazeera's Richard Martin reports from London.