Britain's Prime Minister Rishi Sunak speaks to the media, as heavy rain falls, outside 10 Downing Street in London Wednesday, May 22, 2024, as he announces that he is to call a General Election for July 4. (AP Photo/Kin Cheung)
FILE - Keir Starmer, Leader of Britain's opposition Labour Party delivers a speech at a business conference in London, Thursday, Feb. 1, 2024. (AP Photo/Kirsty Wigglesworth, File)
FILE - This combo image shows Britain's Prime Minister Rishi Sunak in London, Wednesday, May 15, 2024, left, and Leader of the opposition Labour party and Keir Starmer, right, in London, Monday, Oct. 31, 2022. (AP Photo)
Britain's Prime Minister Rishi Sunak speaks to the media, as heavy rain falls, outside 10 Downing Street in London Wednesday, May 22, 2024, as he announces that he is to call a General Election for July 4. (AP Photo/Kin Cheung)
Britain's Prime Minister Rishi Sunak walks from 10 Downing Street to speak to the media in London Wednesday, May 22, 2024, as he announces that he is to call a General Election for July 4. (AP Photo/Kin Cheung)
FILE - Britain's Prime Minister Rishi Sunak, right, and Labour Party leader Keir Starmer pass through the Peer's Lobby to attend the State Opening of Parliament at the Palace of Westminster in London, Tuesday, Nov. 7, 2023. (AP Photo/Alastair Grant, Pool, File)