Los Angeles: It was a good night for the Brits at the Emmy awards, as Kate Winslet was named the best actress for 'Mildred Pierce', while 'Downton Abbey's' Maggie Smith claimed the supporting actress in a miniseries or movie title.

Oscar-winning Winslet won her first Emmy, for her lead role in the HBO miniseries.

"I didn't think we were going to win anything!" Winslet said.

British period piece 'Downton Abbey' scored an unexpected hat-trick.

'Downton Abbey' took six awards in total, including best miniseries, best director, and best supporting actress for Maggie Smith.

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The show, whose second series started on ITV in Britain on Sunday night, has been a critical success on the US network PBS.

Melissa McCarthy wins best comedy actress Emmy

Meanwhile, Melissa McCarthy won the Emmy for best comedy actress for her role in "Mike & Molly."

McCarthy, 41, won the Emmy on her first try for playing a teacher who finds romance with a man she meets at a self-help group for overeaters.

The CBS series marks the first time McCarthy has stepped up from her supporting roles on TV shows like ‘The Gilmore Girls’ and ‘Samantha Who?’ to take a lead part.

It's been a breakthrough year for McCarthy, who also wowed critics in the raunchy summer female comedy "Bridesmaids".