Her voice acting roles included Noddy in the Cosgrove Hall/BBC Television series Noddy’s Toyland Adventures, Trillian in the radio series The Hitchhiker’s Guide to the Galaxy and Princess Eilonwy in the animated film The Black Cauldron.
She also voiced Alex in the video game Alex Builds His Farm, Shu in the English version of the anime film Fire Tripper and additional characters in Budgie the Little Helicopter, Round the Bend, The Lost Snow, Channel 4’s educational program, Maths Everywhere, and The Goose Girl.
Other adult characters she has given voice to include Milady in Albert the Fifth Musketeer and Princess Sylvia in the English version of the home video series Muzzie (Muzzy Comes Back and Muzzy in Gondoland).
She has acted as a voice-over in an Audible Kids audiobook of the His Dark Materials trilogy by Philip Pullman as Roger Parslow, Serafina Pekkala, and other smaller roles.
She also guest starred as the voice of Satan in the web series “Jambareeqi Reviews”
Sheridan attended Brigidine Convent in Windsor, Berkshire and trained at the Guildhall School of Music and Drama.
She lived in London with her twin daughters, Olivia and Alice. She died peacefully at home on 9 August 2015, aged 68.