At its heart was a new trusted trader scheme and a system of green lanes and red lanes.
These are designed to reduce, but not entirely remove, the bureaucracy applied to Great Britain goods which are being sold to Northern Ireland consumers.
Mr Sunak sold the deal with gusto, telling the audience at a factory in Lisburn that the framework made Northern Ireland “the world’s most exciting economic zone”.
He also had to sell it to his own party, but there would be no repeat of the anguished, nail-biting Commons votes, which accompanied Theresa May’s attempts to legislate for a Northern Ireland Brexit deal.
