Trump’s executive order added a note of jeopardy to the UK exemption, saying the president reserved the right to increase steel and aluminium tariffs on Britain to 50 per cent if “he determines that the United Kingdom has not complied with relevant aspects” of the trade deal.

The steel industry is braced to be impacted by Donald Trump’s implementation of a 50% tariff, despite Sir Keir Starmer’s landmark deal with the White House. Downing Street would not say on Tuesday whether British steel exporters would be hit with 50% tariffs from the US from Wednesday,

Donald Trump has spared Britain’s steel industry from 50pc tariffs with an eleventh hour reprieve. The US president last night signed an executive order doubling the tariff on global steel and aluminium imports to 50pc from Wednesday. However, in a surprise move Mr Trump explicitly excluded the UK from the order.