Ingrid Oliver played Helen in the Big Finish Doctor Who audio story Project: Destiny, Lt Baraki in Earth Aid. She also plays Petronella Osgood in the Doctor Who television stories The Day of the Doctor, Death in Heaven, The Zygon Invasion and The Zygon Inversion, as well as the Big Finish UNIT - The New Series audio anthology UNIT: Extinction. In The Zygon Inversion, she also had a minor role as a guise of Bonnie.
She also contributed to the charity reference book Behind the Sofa: Celebrity Memories of Doctor Who, and outside the franchise is best known as a comic actress and half of the duo Watson & Oliver.
- Internet Movie Database at the