Downton Abbey is a British period drama television series created by Julian Fellowes and co-produced by Carnival Films and Masterpiece. It first aired on ITV in the United Kingdom on 26 September 2010 and on PBS in the United States on 9 January 2011 as part of the Masterpiece Classic anthology.
Downton Abbey has received critical acclaim from television critics and won numerous accolades, including a Golden Globe Award for Best Miniseries or Television Film, a BAFTA award and a Primetime Emmy Award for Outstanding Miniseries. It was recognised by Guinness World Records as the most critically acclaimed English-language television series of 2011. It earned the most nominations of any international television series in the history of the Primetime Emmy Awards, with twenty-seven in total (after two seasons). It was the most watched television series on both ITV and PBS, and subsequently became the most successful British costume drama series since the 1981 television serial of Brideshead Revisited. By the third series, it had become one of the most widely watched television shows in the world.
Downton Abbey was placed tenth on The Guardian's list of the Top 10 TV programmes of 2010, and came second in the Top 10 TV dramas of 2010 list, beaten only by Doctor Who. It came first in the Top 10 new drama category.
In September 2011, the show entered the Guinness Book of World Records as the 'most critically acclaimed television show' for the year, becoming the first British show to win the award. It beat American shows Mad Men and Modern Family to the title.