Focusing only on constitutional battles risks playing into Downing Street’s ‘frame that MPs are frustrating rather than protecting democracy’, strategy note says.

MPs are expected to launch a fresh attempt to block a future prime minister pushing a no-deal Brexit policy by threatening to cut off vital funds for government departments.

Amendment to cut off funding to vital departments if UK crashes out of EU without an agreement - to make the policy untenable - not picked

Motion tabled in name of former foreign secretary Dame Margaret Beckett would require a public vote before any deal with the EU.