In 2005, Pierson played the role of policewoman Justine Hopkin in the two-part ITV drama, Bloodlines. She has since acted in other dramas, such as Riot at the Rite, a period drama about Russian dancer Nijinsky, and Hotel Babylon, a BBC series based on the book of the same name by Imogen Edwards-Jones and portraying life behind the scenes in a London hotel.
