Boris Johnson’s hopes of leading Britain out of the EU on October 31 were hanging in the balance last night, after he secured a Brexit deal in Brussels but faced the threat that it could be scuppered in the House of Commons within 48 hours.
The Democratic Unionist party said it would oppose the deal, which would introduce customs barriers between the region and the rest of the UK, as relations between the Northern Ireland party and Mr Johnson descended into acrimony.
Mr Johnson told colleagues that without the support of the 10 DUP MPs for his deal — agreed swiftly in Brussels on Thursday after months of haggling — he could not be certain of winning a crucial Commons vote on Saturday.