More than 20 people have been arrested during a protest in London in support of Palestine Action, a group which has been banned under UK anti-terrorism laws.

"The law does not have an age limit", the head of the Metropolitan Police said after an 83-year-old retired priest was arrested for supporting a banned protest group. Reverend Sue Parfitt from Henbury in Bristol was arrested on the same day the group was outlawed. She was attending a demonstration in Parliament Square, London, on Saturday.

Commenting on the arrest of Reverend Sue Parfitt, an 83-year-old retired priest the Metropolitan Police commissioner said that the law "doesn't have an age limit".

Roger Waters is facing calls to be prosecuted after he declared his support for the banned terrorist organisation Palestine Action.

An online petition is calling of the Isle of Man not to outlaw a group that the UK recently banned as a terror organisation.

Pro-Palestinian campaign group Palestine Action's co-founder on Friday lost a bid to pause the British government's decision to ban the group under anti-terrorism laws, with the group losing an urgent appeal meaning it will be banned from midnight.

The head of London's Metropolitan Police force has been heavily criticised for defending the arrest of an 83-year-old retired priest who expressed support for the direct action group Palestine Action.