The period drama was revealed to have been scrapped this weekend when cast member Neil Jackson tweeted about its demise.
"Such a shame," he wrote. "I have just heard that the BBC will not be making any more Upstairs Downstairs. I loved the show and will miss... [it] greatly."
In a statement regarding the end of Upstairs Downstairs, which was revived after running on ITV in the 1970s, the BBC reiterated that it was proud of the other drama series to have aired in the past year.
"From Call the Midwife to Birdsong and The Syndicate, 2012 has been a great year for original British drama on BBC One," the release read. "But at this stage there are no plans for Upstairs Downstairs to return."
Upstairs Downstairs ended its first series in 2011 with almost 7m viewers. It returned with 6.53m viewers in February of this year.