If you are confined to the internet for your news, its hard to do better than the Guardian's updates on the G20 summit-protests.
The "hardcore" protesters have broken through police lines and have made their way to an unboarded HSBC branch on Queen Victoria Street, says Guardian reporter Paul Lewis. An anarchist flag has been raised on an office block opposite the branch, he adds. The Press Association reported a fight on the same street between two men - one wearing a suit - which was broken up by police.
Police on horses have carried out two charges down Threadneedle Street in a bid to disperse protesters, says Alok Jha, who is at the scene. Alok said everything had been calm beforehand and demonstrators have not been impressed by the police response.
G20 summit and protests: live blog [The Guardian]