Mr Simpson, from Shipley, West Yorkshire, and Ms Somerville, from Bradford, West Yorkshire, appeared at court in person, while Ms Green, from Penryn in Cornwall, appeared via video link.

Their lawyer, Raj Chada, said this ban constituted a “disproportionate” attack on their right to demonstrate, because London is “the seat of government”.

But Judge Alexander Milne said: “The application of the defendants’ right to protest is relative – and there appears to be considerable confusion between the exercise of this right and the commission of criminal offenses.

“This court does not prohibit them from lawfully protesting elsewhere in the UK, but I will prohibit them from participating in any demonstration within the M25.”