Matthew Pennycook says Tory position now unclear on cap on tax rises that was in place when Kemi Badenoch was local government minister

Mary Lou McDonald, president of Sinn Féin, has said Keir Starmer must set out the circumstances in which he will call a referendum on a united Ireland.

McDonald, who is campaigning to be Ireland’s new prime minister as part of a general election campaign, said she would produce a green paper on unification within 100 days of taking office, if successful.

The British government needs to start now indicating for them what they believe is the tipping point at which they believe a referendum would be called.