Prime Minister Boris Johnson has said his Government will have no hesitation in triggering Article 16 of the Northern Ireland Protocol if "disproportionate" problems arise as a result of the Brexit deal.

Mr Johnson made the comments in the Commons yesterday in response to a question from the DUP's Sir Jeffrey Donaldson.

Article 16 allows the EU or the UK to unilaterally take appropriate safeguard measures if its application leads to "serious economic, societal or environmental difficulties that are liable to persist", or to diversion of trade.

Sir Jeffrey said: "The Prime Minister promised us that Northern Ireland would continue to have access to the UK internal market, yet in my constituency consumers are facing empty supermarket shelves, they can't get parcels delivered from Great Britain.