British actress Cush Jumbo poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

British actress Cush Jumbo poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

British actress Cush Jumbo poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

Architect Kulapat Yantrasast poses on the red carpet upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

British artist and stage designer Es Devlin poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

British artist and stage designer Es Devlin poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

Director of the British Museum Nicholas Cullinan poses upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)

Former Chancellor of the Exchequer George Osborne poses on the red carpet upon arrival to attend The British Museum Ball 2026 in London on October 17, 2026. (Photo by CARLOS JASSO / AFP via Getty Images)