A host of stars including Amy Poehler, James Corden and Jennifer Hudson attended the glittering annual event.
Kidman said: "I'm so happy to be in London tonight, supporting England, supporting this city.
"The city has always been so good to me. I got on a plane last night. It's very important to be here in person and show everyone, the world, how strong this city is, show solidarity."
Corden triumphed as man of the year while Kidman won the film actress award, and Amy Poehler was named Glamour inspiration.
Nicole Kidman offered her support to to London and England following the recent terror attacks
Kidman claimed film actress gong at the Glamour Women Of The Year Awards Nicole Kidman in pictures Sun, February 12, 2017
Australian actress Nicole Kidman in pictures.
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Nicole Kidman dazzles in plunging gown at the BAFTAs
Other winners included The Crown actress Vanessa Kirby, Catastrophe star and co-creator Sharon Horgan, singer and The Voice coach Jennifer Hudson and Big Brother host Emma Willis.
Reunited Eighties pop trio Bananarama were named icons, while girl band Little Mix accepted the award for best music act via video link.
Billie Piper won a gong for her stage work and model Winnie Harlow who suffers from a skin condition took the editor's award at the ceremony, which was hosted by Jennifer Saunders.
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