President Donald Trump has signed documents to reduce tariffs on UK cars being imported to the US, which will bring into force parts of a tariff pact agreed between the two countries last month.
Speaking at the G7 summit in Canada, Prime Minister Sir Keir Starmer called the move a "very important day" for both countries.
The pact was the first that the White House has announced since it imposed tariffs on various goods entering America from around the world earlier this year.
But a 10% levy remains in place on most goods, including cars, arriving to American shores from the UK.
As agreed last month, the US said it would allow up to 100,000 cars into the US at a 10% tariff, instead of the 25% import tax imposed by Trump on all car imports earlier this year.
