The White House said the trip was designed "to further strengthen the close relationship between our nations".
Sunak's spokesperson said their discussions would likely include the upcoming NATO summit and Ukraine. "The UK is Europe's leading NATO ally, we are the United States' most important trade, defence and diplomatic partner, and we are at the forefront of providing Ukraine with the support they need to succeed on the battlefield," said Sunak, who studied at California's Stanford University and owns a penthouse flat in Santa Monica.
For Biden, the more high-profile part of the trip will be his meeting with King Charles at Windsor Castle to the west of London where the monarch's late mother Queen Elizabeth hosted Barack Obama in 2016 and Trump in 2018.