Overall I think the primary objective of the deal was diplomatic in nature. The UK rushed to get in first with negotiating something and show a willingness to play ball.
That said however, the UK's largest exports to America are engines and cars, the former of which we won't have to pay a tariff on at all apparently, alongside steel and aluminium. Cars will be charged a 10% tariff for the first 100k before rising up to match the level of everybody else at 25%. Not everything has been agreed on yet, such as pharmaceuticals (the UK's 3rd biggest export to America) or the digital service tax (which I'm sure Elon would be interested in seeing gone). Certain exports from America to the UK, such as beef, will see no tariffs up to the first 13k tons, which is likewise for UK agricultural/meat exports into America. It also still has to meet our food safety standards, so no corn syrup in soft drinks and whatnot.
If this enables local farmers in the UK to sell shit abroad easier and cut down on the costs of feed and fertiliser, then the outcome of this deal doesn't need to be contentious or viewed as an 'own' necessarily. A big issue with farmers in the UK is that it was always cheaper for foreigners to sell here than for us to sell elsewhere, if this lack of tariff on agricultural products up to a certain tonnage enables farmers to make a living again by allowing them to sell in American markets, then there's no reason for this to be contentious. It could be a win for the UK and the USA.
