British film director Sam Mendes poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British film director Sam Mendes poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

Irish actor Andrew Scott poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

Irish actor Andrew Scott poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

Irish actor Andrew Scott poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

Irish actor Andrew Scott poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor George MacKay poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor George MacKay poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor George MacKay poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

French actor Claire Duburcq poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

French actor Claire Duburcq poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

French actor Claire Duburcq poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Daniel Mays poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor George MacKay poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga Akmen / AFP)

British actor George MacKay poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga Akmen / AFP)

British film director Sam Mendes poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga Akmen / AFP)

British cinematographer Roger Deakins (R) and his wife Isabella James Purefoy Ellis (L) pose on the red carpet as they arrive to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British cinematographer Roger Deakins (R) and his wife Isabella James Purefoy Ellis (L) pose on the red carpet as they arrive to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Dean-Charles Chapman poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Dean-Charles Chapman poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga Akmen / AFP)

British actor Dean-Charles Chapman poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British film director Sam Mendes poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga Akmen / AFP)

British actor Nabhaan Rizwan poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Nabhaan Rizwan poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Mark Strong (R) and his wife Liza Marshall pose on the red carpet as they arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Mark Strong (R) and his wife Liza Marshall pose on the red carpet as they arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Nabhaan Rizwan poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Stephen McGann (R) and his wife Heidi Thomas pose on the red carpet as they arrive to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Richard Madden poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Richard Madden poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Richard Madden poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British screenwriter Krysty Wilson-Cairns poses on the red carpet as she arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British screenwriter Krysty Wilson-Cairns poses on the red carpet as she arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British actor Richard Madden poses on the red carpet as he arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

British model Lily Cole (L) poses on the red carpet as she arrives to attend the World premiere and Royal Film Performance of the film "1917" in London on December 4, 2019, in support of the film and TV charity. (Photo by Tolga AKMEN / AFP)

Actor Richard Madden poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Mark Strong poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Mark Strong poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Richard Madden poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Mark Strong poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Dean-Charles Chapman poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Daniel Mays poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Daniel Mays poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Director Sam Mendes poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Director Sam Mendes poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor George MacKay poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor George MacKay poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actress Claire Duburcq poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Dean-Charles Chapman poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Andrew Scott poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)

Actor Andrew Scott poses for photographers upon arrival at the World premiere of the film '1917', in central London, Wednesday, Dec. 4, 2019. (Photo by Joel C Ryan/Invision/AP)