Homeland won the best writing award and its leading actor Damian Lewis also won, beating Steve Buscemi, Bryan Cranston and Jon Hamm.
Dame Maggie Smith has won Best Supporting Actress for her role in Downtown Abbey.
Congratulations to Outstanding Supporting Actor for a Comedy winner ERIC STONESTREET!
Downton Abbey and Sherlock will lead the British pack as the television stars turn out for the ceremony in Los Angeles.Read the full story ›
Joanne Froggart who plays the head housemaid Anna in Downton speaks to ITV News on her Emmy hopes ahead of the LA awards.
The cast of Downtown Abbey talk to ITV News about being tipped for success at the Emmys awards in LA tonight.
British period drama Downton Abbey is being tipped for success in the Emmy television awards in Los Angeles on Sunday night.
Industry pundits say the hit ITV1 show, about the lives of aristocrats and their servants, has a good chance of snatching the award for best drama, the Emmys' most prestigious prize.
Six members of the show's large cast have acting nominations, with Maggie Smith seen as a front-runner in the supporting actress category for her acid-tongued dowager countess Violet Crawley.
Among Downton Abbey's main rivals for best drama is 1960s-era advertising show Mad Men, which is aiming for a fifth straight win in the category.
Other British actors are also expected to do well, with Benedict Cumberbatch tipped to take home the miniseries actor Emmy for his modern twist on fictional detective Sherlock Holmes in Sherlock.
The Emmy Awards start at 0100 BST and will be hosted by comedian Jimmy Kimmel.
British television series Downton Abbey is one of six dramas up for an Emmy Award this year. It will be competing with Homeland, Breaking Bad, Mad Men, Game of Thrones and Boardwalk Empire for the best drama series title.
The Emmys will be broadcast live from Los Angeles on September 23.