A second man is to appear in court charged with the murder of Drummer Lee Rigby in Woolwich, Scotland Yard said.
Michael Adebolajo, 28, of Romford, Essex, has also been charged with the attempted murder of two police officers and the possession of a firearm.
He was charged yesterday evening and will appear at Westminster Magistrates' Court tomorrow.
Michael Adebowale, 22, has already been charged with murdering the young soldier and is due to appear at the Old Bailey on the same day.
Two men aged 42 and 46 arrested on suspicion of being involved in the illegal supply of guns were bailed yesterday to return to a south London police station later this month.
Rival protesters clashed outside the Houses of Parliament yesterday and the English Defence League held events in towns and cities across the country in the wake of Drummer Rigby's murder.
Around 300 Unite Against Fascism (UAF) members gathered in Parliament Square to block the British National Party (BNP) from marching to the Cenotaph.
Fierce shouting from both sides spilled into violence and dozens of police were required to break up the disorder.
Scotland Yard said 58 people from the UAF protest were arrested under section 14 of the Public Order Act after they refused to move to their pre-arranged protest pen in Whitehall.
The BNP group of around 150 people cheered as those arrested were handcuffed and led onto "Special Service" red double-decker London buses to be driven to police stations.
The far Right group held banners calling for "hate preachers out" while the counter protesters chanted "fascist scum" and "you racist Nazis".
Small groups of EDL supporters gathered across England, including in Manchester, Sheffield, Brighton, Luton, Colchester and Walsall.