Sir Keir Starmer and Donald Trump discussed ongoing trade negotiations and the potential threat of US tariffs on UK goods during a phone call on Sunday (30 March).
The prime minister and US president agreed to continue negotiations "at pace" towards a UK-US economic prosperity deal.
Downing Street described the discussion as “productive”.
The call follows Mr Trump's announcement of a 25 per cent import tax on all cars entering the US, a move that could significantly impact UK car manufacturers.