In some of her acting work she has been credited as Eva Griffiths, her father's original surname.
[1] She was educated at More House, a private Catholic school for girls in London, paying her fees with her own earnings as an actress.
Grffith had left school without A-levels, but in the 1990s she returned to extramural classes at Birkbeck College.
She went on to study at King's College London for a BA, an MA, and eventually a PhD.
[1] In 2013, she published A Jacobean Company and its Playhouse: The Queen’s Servants at the Red Bull Theatre (c. 1605–1619), a monograph study of the Red Bull Theatre, London, based on her doctoral thesis.