Police are trying to track down nine people after violent disorder at a protest against the imprisonment of former English Defence League leader Tommy Robinson.

Scotland Yard said scaffolding and glass bottles were among the items thrown at police at the June 9 protest in Whitehall, with 21 officers injured.

Hundreds of demonstrators descended on the capital and blocked off the road around Trafalgar Square after Robinson was jailed for contempt of court.

Police are asking for information on nine people whose pictures they have released

Police are asking for information on nine people whose pictures they have released

Scotland Yard released images of nine people this morning and appealed for information

Leeds Crown Court heard Robinson, real name Stephen Christopher Yaxley-Lennon, used social media to broadcast details of a trial which was subject to blanket reporting restrictions.

Detective Constable Jonny Wise, from the Metropolitan Police Public Order Investigations team, said: 'During this demonstration violent disorder broke out on the streets of Central London.

'Serious disruption was caused to members of the public, local businesses and the local communities. Vehicles and buildings were damaged and those responsible need to be held accountable for their actions.'

On June 9, rows of riot police blocked the gate down the Mall leading to Buckingham Palace where the Royal Family had gathered after celebrating Trooping the Colour just hours before.

Five arrests were made and five officers were reportedly injured during the demonstration which saw some of Robinson's supporters appear to throw bottles, metal barriers and traffic cones at police.

Troubled flared after a speech by Dutch right-wing campaigner Geert Wilders.

Demonstrators clashed with police on June 9 after a speech by Geert Wilders

A number of police officers were injured after bottles and scaffolding poles were thrown

Robinson's case has also been taken up by right-wingers in the US, most notably former White House Chief Strategist Steve Bannon.

In a radio discussion earlier this month, Bannon said the English Defence League founder was 'a solid guy' and that 'he's got to be released from prison.'

It emerged yesterday that Bannon plans to set up a foundation in Europe called The Movement, which he hopes will help spark a Right-wing revolution this side of the Atlantic.

Anyone with information about those pictured is asked to call police on 020 8246 0076 or Crimestoppers anonymously on 0800 555111.