Presented by the British Academy of Film and Television Arts Los Angeles, the event is to take place Nov. 7 at the Beverly Hilton Hotel.
"I'm so happy to be back hosting my fourth Britannia Awards," Cumming said in a statement. "It's 15 years since I first came to Hollywood and what better way to commemorate that than to be hosting a celebration of the best of British and Tinseltown. I'm excited to see old friends and raise a few glasses to the best in our business -- and be a bit mischievous too of course."
"We're so pleased that we were able to secure Alan to host this year's awards. We owe thanks to the producers of 'The Good Wife' who were kind enough to rearrange their production schedule to allow for Alan to be with us," said Britannia Chairman Nigel Lythgoe, referring to Cumming's television legal drama, which shoots in New York. "We're grateful that we can do justice to the extraordinary caliber of talent represented in this year's honorees with our esteemed host and presenters."
The Britannia Awards are to be broadcast Nov. 11 on BBC America.