Almost 900 people have been arrested at a demonstration supporting banned group Palestine Action, in what is thought to be Britain's biggest ever mass arrest.

Scotland Yard condemned the 'intolerable' abuse its officers suffered during the rally in Parliament Square, in Westminster, yesterday attended by an estimated 1,500 people.

A total of 890 people were arrested, with 857 arrests made for showing support for a proscribed terror group

Protest organisers Defend Our Juries insisted the rally was 'the picture of peaceful protest', despite 33 people being arrested for other offences, including 17 for assaults on police officers.

The protest started just before 1pm, as demonstrators held signs saying: 'I oppose genocide. I support Palestine Action.'