Simon Nicholson was an episode writer for Thomas and Friends. He has also written for "Bob the Builder", "Rubbadubbers", "Tracy Beaker", and "The Hoobs". He also wrote a book for children, "The Oldmoor Orphans".
- He, Gadi Levy, Marc Seal, Laura Beaumont, Dan Shatzberg, Paul Larson, Holger Potzern, Simona Pahl, Steven Elford, Rob Rackstraw, David Menkin, James Mason, Ross Hastings, Polly Churchill, Achim Schülke, Tobias Diakow, Marjolein Algera, Ernesto Lezama, Øyvind Borgemoen Lyse, Fabian Harloff, Dave Ingham, José Gilberto Vilchis, Nigel Chilvers, Lenora Hume, Lee Pressman, Sam Barlow, Miranda Larson, Stan Limburg, Jens Wendland, Helen Farrall, Lutz Harder, Francisco Colmenero, Steven Kynman, Sharon Miller, Rupert Degas, Lucy Montgomery, Knud Riepen, Eberhard Haar, Robert Kotulla, Ricardo Silva, Louise Kramskoy, Erik Schäffler, Douglas Welbat, Carlos Enrique Bonilla, Katja Brügger, Christian Rudolf, Jürgen Holdorf, Holger Mahlich, Robert Missler and Ian James Corlett have all worked on "Bob the Builder".
- He, Allan Plenderleith and Marc Seal all work on "PJ Masks".