The latest twist in Trump's trade tariff drama has led many to ask what this means for the UK-US deal.

A New York court ruled that the "countdown" import tax imposed by the U.S. president is illegal, but a day later, the appeals court said they could continue to collect them before the case was filed and held a hearing on June 5.

Whatever the outcome of the case, the impact on the UK tariff agreement is not actually as much as you might think.

First, the U.S. court ruled that illegal tariffs do not include tariffs on cars, which constitute the majority of Britain's exports to the United States, while steel and aluminum are other industries that are most affected.

UK car exports currently attract 27.5% tariffs, while steel and aluminum are at 25%, the same as other countries. Wednesday's ruling has not changed.

The deal has not yet taken effect despite a deal with the United States to reduce vehicle tariffs to 10% and steel and aluminum tariffs to zero.

Sources at Jaguar Land Rover told the BBC that the tariffs cost them "a lot of money" and delayed the concept of the automotive industry trade agency SMMT, who could feel the pain of the tariffs before they could feel the current U.S. stockpile.

The government said it is working to implement the deal as soon as possible, with Commerce Secretary Jonathan Reynolds coming to the case promptly when meeting with U.S. deputies at the Economic Cooperation and Development Think Tank Conference in Paris next week.

The ruling did block Trump’s blanket tariffs on other British goods entering the United States, such as products such as salmon and whiskey. Therefore, how will the way tariff transactions be resolved.

British exporters were relieved of the relief from the cessation of tariffs, which may be brief as the White House said it intends to appeal the decision.

The president also has other mechanisms to impose tariffs through different provisions in trade laws or through Congress pushing them.

Britain announced a trade deal with the United States to make some big fanfare, but if it turns out that the president is blocked from imposing wasted tariffs on others by the court or his own legislature, there is a question mark that is much better than other countries than others.

Perhaps all the most corrosive effects may be another wildcard thrown into an already unpredictable international trade standoff game.

It makes it difficult for businesses to plan, invest, any confidence.