Fun and games in parliament as Brexiters protest at Speaker Bercow's decision to accept D Grieve's amendment to the business of the house motion for the coming Brexit withdrawal deal debate to require a govt statement "within three sitting days". They claim the motion was supposed to be unamendable; Bercow says no, just non-debatable. Pro-remain MPs rising to defend Bercow as doughty champion of parliament. Ken Clark cheekily invited the protesters to exit parliament and don a yellow vest.