Hundreds of riot police were deployed throughout central London today as protests took place against next week’s G8 summit.

AN undercover British police officer who infiltrated a radical environmental movement encouraged illegal activity during protests opposing the controversial Shell Corrib pipe-line in north Mayo, an Irish Examiner investigation has revealed.

Anti-riot agents have fired volleys of tear gas and rubber pellets at anti-globalisation demonstrators.

A group of Irish activists, who were caught up in the G8 protests in Genoa last week, are demanding the release of one of their campaigners.