Le Touzel has also been seen on the small screen in shows as diverse as Dixon of Dock Green, The Brontes of Haworth, The Uninvited, The Professionals, Lovejoy, Alas Smith and Jones, Midsomer Murders, My Family and The Long Walk to Finchley (as Patricia Hornsby-Smith). In 1994 she played Sarah Teale in the TV series Between the Lines. In 2000 Sylvestra was cast as a veterinary surgeon in the sitcom Beast, written by Simon Nye, which also starred Alexander Armstrong. Only 12 episodes were made over two series. In 2007, she also played the role of Mrs Allen in the ITV adaptation of Northanger Abbey. She has also played Harriet Waterhouse in the ITV drama Bonkers.