Johnson says he could suspend agreement with EU on goods shipped to Northern Ireland

The prime minister has said he would have no hesitation suspending the agreement reached with the EU over checks on food and goods shipped to Northern Ireland if delays to freight get worse.

Boris Johnson said goods were flowing well, but with gaps appearing on their shelves in the province, six major supermarket chains, including Sainsbury and Tesco, have written to the government saying urgent intervention is required to ensure the system is workable.

We report from Northern Ireland.