Georgia Elizabeth Tennant (née Moffett; born 25 December 1984) is an English actress. She portrayed Heather Whitefield for 2 episodes of Casualty in 2009 at the beginning of the 24th series. Prior to her appearance as Heather, Moffett appeared as Elaine Walker for one episode of Casualty in 2007. In the 2014 episode "Entrenched", she once again made a guest appearance, this time as Briony Whitman. Three days later, she reprised her role as Briony for one episode of Holby City.