Joanne Froggatt (born 23 August 1980) is an English actress of stage, television, and film. From 2010, she played lady's maid Anna Bates in all six seasons of the period drama "Downton Abbey". For this role, she received three Primetime Emmy Award nominations for Outstanding Supporting Actress in a Drama Series and won the Golden Globe Award for Best Supporting Actress on Television in 2014.
Joanne Froggatt started acting in 1995.
It's never mentioned when her first role was, it just highlights that she played a certain role starting in 2010. She certainly could have began acting in 1995 as she would have been 15, and according to her wiki she actually did start in 1996. It's difficult because it mentions the role in 2010 so the system probably assumes this was the "start".