Andrew "Andy" Bernhardt was an episode writer for Thomas and Friends. He also works as a psychologist within the criminal justice system. He has written a book on the subject of fathers and sons. He has also written for other children's shows such as "Big and Small", "Rainbow", "Numbertime", "Sheeep", "The Hoobs" and "Get Well Soon. He is currently working as a senior lecturer at the Univeristy of Hertfordshire.
- He, Lee Pressman and George Tarry all worked on "Rainbow".
- He, John Hasler and Keith Wickham all worked on "Toot the Tiny Tugboat".
- He, Dave Ingham and Jan Page have worked on "Sheeep".
- He, Simon Nicholson, Marc Seal, Robyn Charteris, Paul Dawson, James Mason, Jan Page, Paul Larson and Polly Churchill have all worked on "The Hoobs".
- He, Lee Pressman, Robyn Charteris and Helen Farrall have worked on "Crossroads".