Britain's Prime Minister Keir Starmer adjusts his glasses during his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer during his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer during his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer during his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer gestures during his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer speaks to supporters after his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer leaves after his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer speaks to supporters after his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer during his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer during his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)

Britain's Prime Minister Keir Starmer during his 'plan for change' speech in Buckinghamshire, England, Thursday, Dec. 5, 2024.(AP Photo/Darren Staples, Pool)