Thomas was a writer and editor of Railway World magazine.
[3] Thomas is Chairman of the Greensand Railway Museum Trust, a charity that restores historic rolling stock related to the sand quarrying industry.
[4] He is also a Director of the Leighton Buzzard Light Railway.
[3] In 2016, Thomas sued writer and illustrator Pauline Hazelwood over a children's book about the steam locomotive "Alice".
The case was settled before trial with the payment of a financial sum to Mr Thomas.