Michael Gove, the cabinet minister in charge of no-deal planning, is facing an ultimatum from Labour to fully publish the Operation Yellowhammer documents

Labour will try to force ministers to publish the most up-to-date assessments of the likely aftershocks of a no-deal Brexit unless the government does so voluntarily before parliament returns next month.

Sir Keir Starmer, the shadow Brexit secretary, claims Labour “will not hesitate to use all the parliamentary devices available” to compel the publication of the Operation Yellowhammer documents. He said this would include a humble address to the Queen, a tactic used by his party to force Theresa May to publish the full legal advice on her Brexit deal.

Starmer issued the ultimatum in a letter to Michael Gove, the cabinet minister in charge of no-deal planning, after the publication of the leaked Yellowhammer file by The Sunday Times last weekend.

The dossier,