LONDON, ENGLAND - JUNE 14: Britain's Prime Minister Keir Starmer and Japan's Prime Minister Sanae Takaichi attend a business roundtable meeting in Downing Street on June 14, 2026 in London, England. (Photo by Toby Shepheard - WPA Pool/Getty Images)

LONDON, ENGLAND - JUNE 14: Britain's Prime Minister Keir Starmer and Japan's Prime Minister Sanae Takaichi attend a business roundtable meeting in Downing Street on June 14, 2026 in London, England. (Photo by Toby Shepheard - WPA Pool/Getty Images)

LONDON, ENGLAND - JUNE 14: Britain's Prime Minister Keir Starmer and Japan's Prime Minister Sanae Takaichi attend a business roundtable meeting in Downing Street on June 14, 2026 in London, England. (Photo by Toby Shepheard - WPA Pool/Getty Images)

Britain's Prime Minister Keir Starmer (4th R) and Japan's Prime Minister Sanae Takaichi (3rd R) attend a business roundtable meeting at Downing Street in central London on June 14, 2026, as part of her governmental trip to the UK ahead of the G7 in France. (Photo by Toby Shepheard / POOL / AFP via Getty Images)

LONDON, ENGLAND - JUNE 14: Britain's Prime Minister Keir Starmer meets with Japan's Prime Minister Sanae Takaichi attend a business roundtable meeting in Downing Street on June 14, 2026 in London, England. (Photo by Toby Shepheard - WPA Pool/Getty Images)

LONDON, ENGLAND - JUNE 14: Britain's Prime Minister Keir Starmer meets with Japan's Prime Minister Sanae Takaichi attend a business roundtable meeting in Downing Street on June 14, 2026 in London, England. (Photo by Toby Shepheard - WPA Pool/Getty Images)

Britain's Prime Minister Keir Starmer (centre L) and Japan's Prime Minister Sanae Takaichi (centre R) attend a business roundtable meeting at Downing Street in central London on June 14, 2026, as part of her governmental trip to the UK ahead of the G7 in France. (Photo by Toby Shepheard / POOL / AFP via Getty Images)

Britain's Prime Minister Keir Starmer (2nd R) and Japan's Prime Minister Sanae Takaichi (far R) attend a business roundtable meeting at Downing Street in central London on June 14, 2026, as part of her governmental trip to the UK ahead of the G7 in France. (Photo by Toby Shepheard / POOL / AFP via Getty Images)