- Season 1 - Thomas in Trouble
- Season 3 - A Scarf for Percy
- Season 5 - Lady Hatt's Birthday Party
- Season 7 - Fergus Breaks the Rules
- Season 9 - Thomas and the Birthday Picnic
- Season 10 - Thomas and the Shooting Star
- Season 14 - Jitters and Japes
- A portrait of Earnest, a Victorian-style steam engine depicted with a moustache can be seen in the first season episode, Thomas in Trouble.
- The exterior model of Topham Hall in The Great Discovery was reused from The Duke and Duchess of Boxford's Summer House.