Trump posted on his Truth Social platform that a deal due to be announced at 10 a.m. EDT (1400 GMT) will be a “full and comprehensive one that will cement the relationship between the United States and the United Kingdom for many years to come.”

It’s the first bilateral trade deal announced since Trump began slapping tariffs on U.S. trading partners. He said: “Many other deals, which are in serious stages of negotiation, to follow!”

Starmer’s office said the prime minister would give an “update” about U.S. trade talks later Thursday.

“As you know, talks with the U.S. have been ongoing and you’ll hear more from me about that later today.” Starmer said at a defense conference in London.

The agreement is likely to fall short of a full free trade deal, but will provide tariff relief to certain sectors.

The president has imposed a 10% tax on imports from Britain, as well as 25% tariffs on autos, steel and aluminum on the premise that doing so would foster more factory jobs domestically.

A major goal of British negotiators has been to reduce or lift the import tax on U.K. cars and steel. The U.S. is the largest destination for British cars, accounting for more than a quarter of U.K. auto exports in 2024, according to the Office for National Statistics.

Britain has also sought tariff exemptions for pharmaceuticals, while the U.S. wants greater access to the British market for agriculture products. Starmer’s government has said it won’t lower U.K. food standards to allow in chlorine-rinsed American chicken or hormone-treated beef.

The British government will see a deal it as a vindication of Starmer’s emollient approach to Trump, which has avoided direct confrontation or criticism. Unlike the European Union, Britain did not announce retaliatory tariffs on U.S. goods in response to Trump’s import taxes.

A trade deal with the United Kingdom would be symbolically important, and a relief for British exporters. But an agreement would do little to address Trump’s core concern about persistent trade deficits that prompted him to impose import taxes on countries around the world.

The U.S. ran a $11.9 billion trade surplus in goods with the U.K. last year, according to the Census Bureau. The $68 billion in goods that the U.S. imported from the U.K. last year accounted for just 2% of all goods imported into the country.

The U.S. is much more important to the U.K. economy. It was Britain’s biggest trading partner last year, according to government statistics, though the bulk of Britain’s exports to the U.S. are services rather than goods.

Trump has shown a desire to strike a trade agreement with the U.K. since it voted in 2016 to leave the European Union. Yet as recently as Tuesday, Trump showed no awareness of the possible terms of the deal when asked about its possibility.

“They’re offering us concessions?” Trump told reporters. “I hope so… They do want to make a deal very badly.”

Trump has previously said that his leverage in talks would be U.S. consumers, but he appeared to suggest that the U.K. would also start buying more American-made goods.

“I think that the United Kingdom, like every other country, they want to … go shopping in the United States of America,” he said.

A trade deal with the U.S. is one of several that Starmer’s government is seeking to strike. On Tuesday, Britain and India announced a trade after three years of negotiations. The U.K. is also trying to lift some of the barriers to trade with the EU imposed when Britain left the bloc in 2020.