 In 2018, she made her stage debut in Lauren Gunderson's "I and You" at the Hampstead Theatre, London, to positive personal reviews.Williams' other television appearances include guest starring in 2015 in four episodes of the BBC science fiction series "Doctor Who", the 2015 British television film docudrama "Cyberbully" and the 2017 British science-fiction teen thriller film "iBoy".She has had co-starring roles in the 2017 romantic period-drama film "Mary Shelley", the 2018 romantic comedy-drama film "Then Came You" and the 2018 animated prehistorical sports film comedy "Early Man".