Thousands protest against Syria air strikes as Stop the War Coalition marches on London

Britain is already involved in air strikes against Isis in Iraq

(Getty Images )

Thousands of people have taken to the streets of London to protest against Britain joining the bombing campaign against Isis in Syria.

The demonstration was one of many across the country organised by the Stop The War Coalition protest movement.

Many famous faces were present as actor Mark Rylance and musician Brian Eno handed a letter to Downing Street urging David Cameron not to bomb Syria

Protestors sat down in the middle of the road outside Downing Street Getty Images (Getty Images)

An anti-war protester amongst the crowd Getty Images (Getty Images)

'Don't Bomb Syria' signs crowd the skyline next to the Cenotaph Getty Images (Getty Images)

Britain is already involved in air strikes against Isis in Iraq and Mr Cameron is pushing for military action in Syria. Government ministers have been urged to phone members of the opposition to get them to support air strikes, after Jeremy Corbyn openly opposed the proposals.

Actor Mark Rylance addressed the crowd PA (PA)

Diane Abbott MP speaks to protesters at Whitehall in London PA (PA)

George Galloway was also present Getty Images (Getty Images)

The Labour party leader, who is a lifelong pacifist, has written to MPs saying he opposes action, despite some in his shadow cabinet expressing their support for the Prime Minister's proposals.

Shadow chancellor John McDonnell pushed for a free vote saying MPs should be allowed to make their own judgement.

Police were present throughout the day PA (PA)

Thousands attending protests around the country PA (PA)

Parliament is expected to vote on the issue next week.