Denise Cassar was an episode writer for Thomas and Friends. She started her writing career in South Africa, where she wrote for "Sesame Street". Whilst in South Africa, she wrote and even presented some wildlife documentaries and children's programmes. Since she returned to the UK, she has contributed to many children's shows, including "Raa Raa", "Postman Pat", "ZingZillas", and "Driver Dan".
- She, Robert Missler, Eduardo Garza, Marjolein Algera, Fabian Harloff, Stefan Knothe, Nadine Schreier, Janusz Zadura, Mark Skillicorn, Petri Hanttu, Angela Quast, Dagmar Dreke, Dov Reiser, Louise Raeder, Fred Meijer, Ricardo Mendoza, Beata Wyrąbkiewicz, Gadi Levy, Manfred Steffen and Alec Baldwin have all worked on "Sesame Street".