King of the Railway is a special that was released in September 2013.
- Thomas
- Edward
- Henry
- Gordon
- James
- Percy
- Toby
- Emily
- Spencer
- Hiro
- Belle
- Stephen
- Caitlin
- Connor
- Skarloey
- Rheneas
- Luke
- Victor
- Diesel
- Paxton
- Millie
- Annie and Clarabel
- Jack
- Kevin
- Cranky
- Sir Topham Hatt
- Sir Robert Norramby
- Stephen's Friends (do not speak)
- King Godred (does not speak)
- Rosie (cameo)
- Salty (cameo)
- Stafford (cameo)
- Peter Sam (cameo)
- Rusty (cameo)
- Winston (cameo)
- Henrietta (cameo)
- Owen (cameo)
- Merrick (cameo)
- Harold (cameo)
- Captain (cameo)
- Lady Hatt (cameo)
- Sodor Brass Band (cameo)
- Old Bailey (cameo)
- The Engineer (cameo)
- The Bird Watcher (cameo)
- One of Dowager Hatt's Friends (cameo)
- The Duke and Duchess of Boxford (mentioned)
- Knapford
- Sodor Steamworks
- Sodor Search and Rescue Centre
- Brendam Docks
- Ulfstead Castle
- Ulfstead Mine
- Blue Mountain Quarry
- Maron
- Gordon's Hill
- Tidmouth Sheds
- Shunting Yards
- Sodor Suspension Bridge
- Misty Island Tunnel
- ===USA===
- Mark Moraghan as the narrator
- Martin Sherman as Thomas, Percy, and Diesel
- William Hope as Edward and Toby
- Kerry Shale as Henry, Gordon, James, Kevin and Sir Topham Hatt
- David Bedella as Victor
- Keith Wickham as Skarloey
- Glenn Wrage as Spencer and Cranky
- Jules de Jongh as Emily
- David Menkin as Jack
- Togo Igawa as Hiro
- Teresa Gallagher as Belle, Annie and Clarabel
- Ben Small as Rheneas
- Steven Kynman as Paxton
- Michael Legge as Luke
- Bob Golding as Stephen
- Mike Grady as Sir Robert Norramby
- Miranda Raison as Millie
- Jonathan Forbes as Connor
- Rebecca O'Mara as Caitlin
- ===UK and AUS===
- Mark Moraghan as the narrator
- Ben Small as Thomas, Toby and Rheneas
- Keith Wickham as Edward, Henry, Gordon, James, Percy, Skarloey and Sir Topham Hatt
- Matt Wilkinson as Spencer, Kevin and Cranky
- Steven Kynman as Paxton and Jack
- Michael Legge as Luke
- David Bedella as Victor
- Bob Golding as Stephen
- Mike Grady as Sir Robert Norramby
- Miranda Raison as Millie
- Jonathan Forbes as Connor
- Teresa Gallagher as Emily, Belle, Annie, and Clarabel
- Rebecca O'Mara as Caitlin
- Togo Igawa as Hiro
- Kerry Shale as Diesel
- USThe Search for the Lost Crown gameIt's Gonna be a Great Day sing-a-longSearching Everywhere sing-a-longWorking Together sing-a-longGuess Who? puzzles===UK===
- Guess Who? puzzles
- Working Together Again sing-a-long
- Searching Everywhere sing-a-long
- It's Gonna be a Great Day sing-a-long
- In Poland the special is know as "Secret of the Lost Crown" and in Sweden it is titled "Railway King".
- This special will be shown in select Australian theatres in late July and UK theatres in late August.
- This special aired on the Polish TV channel MiniMini on June 29th, 2013.David Menkin is not credited for voicing Jack in the US version.When Spencer returns to Sodor, his wheels are black and his nameplate is blank.During the scene of Gordon and Spencer starting a race at Knapford, James can be seen departing the station with a train of trucks at the start of the scene. A few shots later, when Spencer passes Gordon, James' tender can be right on the edge of the shot.It is not clear where Toby and Henrietta come from when they pull into Knapford station as the track they are on ends dead.During some of the crowd scenes, some of the people are duplicated.When Gordon screeches to a stop behind Stephen, his bogie wheels spark, but bogies are not fitted with brakes.It is stated that nobody knew where Stephen was, but Skarloey knew that Stephen had gone to investigate Ulfstead Mine.A brakevan should have been added to Thomas and Percy's train.Thomas mysteriously turns round when he returns to Ulfstead Castle to fetch Jack, and again when he returns.It is impossible for Gordon, Edward and Toby to puff into the Steamworks at the same time, due to there being only one transfer table.The points are frequently not set for the lines the engines take.When Caitlin goes across Vicarstown Bridge, she is not coupled to her coaches.
