Withdrawal Agreement
Article 7.3.4.8 - "Belly Tickling"
The United Kingdom of Great Britain & Northern Ireland (don't worry about the border, chaps) hereby states that if there is any belly tickling to be done, it will jolly well be us doing the tickling, and Fritz, Pierre, Juan & Giovanni will be the ones being tickled, what what, old chap.
Article 7.3.4.9 - "Border Controls"
The United Kingdom of Great Britain & Northern Ireland hereby states that it'll be reet, and no-one needs to worry about it. Anyone wearing a balaclava and driving unmarked vans full of God knows what across the lines are fully entitled to do so. Because of Spitfires and that.