Reform UK's London Mayoral candidate Laila Cunningham smiles outside the BBC in central London on June 21, 2026, after appearing on the BBC's 'Sunday' political television show. (Photo by Adrian Dennis / AFP via Getty Images)

Britain's Business Secretary Peter Kyle (R) and Britain's main opposition Conservative Party Shadow Chancellor of the Exchequer, Mel Stride (L) speak to members of the media outside the BBC in central London on June 21, 2026, after appearing on the BBC's 'Sunday' political television show, amid reports that Britain's Prime Minister Keir Starmer is planning to announce his resignation. (Photo by Adrian Dennis / AFP via Getty Images)

Britain's Business Secretary Peter Kyle (R) and Britain's main opposition Conservative Party Shadow Chancellor of the Exchequer, Mel Stride (L) speak to members of the media outside the BBC in central London on June 21, 2026, after appearing on the BBC's 'Sunday' political television show, amid reports that Britain's Prime Minister Keir Starmer is planning to announce his resignation. (Photo by Adrian Dennis / AFP via Getty Images)

Labour MP Jess Phillips smiles outside the BBC in central London on June 21, 2026, after appearing on the BBC's 'Sunday' political television show, amid reports that Britain's Prime Minister Keir Starmer is planning to announce his resignation. (Photo by Adrian Dennis / AFP via Getty Images)

Labour MP Jess Phillips smiles outside the BBC in central London on June 21, 2026, after appearing on the BBC's 'Sunday' political television show, amid reports that Britain's Prime Minister Keir Starmer is planning to announce his resignation. (Photo by Adrian Dennis / AFP via Getty Images)

Britain's Business Secretary Peter Kyle (R) and Britain's main opposition Conservative Party Shadow Chancellor of the Exchequer, Mel Stride (L) speak to members of the media outside the BBC in central London on June 21, 2026, after appearing on the BBC's 'Sunday' political television show, amid reports that Britain's Prime Minister Keir Starmer is planning to announce his resignation. (Photo by Adrian Dennis / AFP via Getty Images)

Britain's Business Secretary Peter Kyle (L) and Britain's main opposition Conservative Party Shadow Chancellor of the Exchequer, Mel Stride (R) speak to members of the media outside the BBC in central London on June 21, 2026, after appearing on the BBC's 'Sunday' political television show, amid reports that Britain's Prime Minister Keir Starmer is planning to announce his resignation. (Photo by Adrian Dennis / AFP via Getty Images)

Britain's Business Secretary Peter Kyle (L) and Britain's main opposition Conservative Party Shadow Chancellor of the Exchequer, Mel Stride (R) speak to members of the media outside the BBC in central London on June 21, 2026, after appearing on the BBC's 'Sunday' political television show, amid reports that Britain's Prime Minister Keir Starmer is planning to announce his resignation. (Photo by Adrian DENNIS / AFP via Getty Images)