Tate's acting debut came in a 1991 episode of "The Bill" and from 1999, she commenced work in voice acting, mainly in children's programmes, starting with the U.S. version of "Bob the Builder" and also on "Dream Street", voicing Half-Pint the milk float. In 2006, Emma began to voice Perfect Peter in the TV adaptation of Francesca Simon's book "Horrid Henry". She also voiced by Tickles in the American version of 64 Zoo Lane by Lobster Films.