Marion Edwards was the executive producer of Thomas and Friends for HiT Entertainment. Before her contribution to HiT, she was nominated for BATFA as the producer of Pongwiffy and a 25 minute animated adaptation of Harry Horse's "The Last Polar Bears". Christopher Skala worked alongside Edwards until Season 15, and Karen Barnes has worked alongside Edwards as of Blue Mountain Mystery.
In 2011, she was also nominated for the Beyond the Call of Duty Award for executive producer in children's entertainment.
She left HiT Entertainment in August 2014 after working for the company for six years. Edward Catchpole took over her role as executive producer.