Kenny made her professional debut in the 2007 BBC television dramaComing Down the Mountain and in 2009 she made her film debut in Phil Claydon's Lesbian Vampire Killers. She has also played the role of Kate in an improvisational BBC production called Freefall written and directed by Dominic Savage, which was screened in 2009. In January 2010 Kenny began her role in the EastEnders spin-off as Zsa Zsa Carter as well as in EastEnders itself. Kenny was cast in the role of Zsa Zsa after writing the second episode of EastEnders: E20. A second series of EastEnders: E20 was announced in April 2010, with Kenny returning as a writer, though it was announced the following month that Zsa Zsa would be written out of EastEnders so Kenny could pursue further acting roles. She made her last appearance on 30 September 2010. In 2010 Kenny was painted by Rolf Harris as Titania from Shakespeare's A Midsummer Night's Dream for an edition of BBC TV's Arena. Kenny wrote a further episode of EastEnders: E20 for series three in 2011 and was selected as the youngest ever writer for the BBC Writers Academy where she trained to write for programmes such as EastEnders, Casualty, Holby City, and Doctors. Her first EastEnders episode as a writer was broadcast on 8 May 2012. She joined the cast of E4's Beaver Falls for its second series playing the character Hope. The second series began airing in early August 2012 with the final episode of the series airing in early September 2012. It was announced on 22 September 2012 that the drama would not be recommissioned. In 2011 she was cast as Danielle Reeves in the BBC Three dramedyPramface alongside her Beaver Falls co-star Scarlett Alice Johnson. Pramface piloted in late February 2012 and was met with good reception, so much so the second series was commissioned by the BBC before the first series had even aired. She reprised her role for the second series which began airing in the new year of 2013 and was broadcast a second time on BBC One throughout the summer of 2013. She reprised her role again for a third series which commenced airing in late February 2014. She played the role of Rachel alongside Matthew Crosby, Ben Clark and Tom Parry in the first series of BBC Three's sitcomBadults which aired in the summer of 2013. A second series was commissioned but it was announced that Kenny would not feature in it. In 2016 Emer Kenny worked as a scriptwriter on Irish soap Red Rock for a few episodes. In 2017 she joined the cast of the BBC TV seriesFather Brown as Penelope "Bunty" Windermere, the wayward niece of Lady Felicia.
