The fifteenth season of the television series aired during March 2011 in the UK and between April and June in the US. This season has a total of twenty episodes.

Episodes Edit

Screenshot UK title (top)

US title (bottom)

Original UK

release date

Episode number #
"Gordon and Ferdinand" 1st March 2011 #01
Gordon is embarrassed to be seen with Ferdinand whilst delivering the Lion of Sodor.
"Toby and Bash" 2nd March 2011 #02
Toby tries to find Bash a home on Sodor, but Bash misses his friends on Misty Island.
"Emily and Dash" 3rd March 2011 #03
Emily has to escort Dash to a steam fair, but thoughtlessly leaves him behind.
"Percy's New Friends" 4th March 2011 #04
After his friends say they are too busy to play, Percy decides to make friends with the animals on Sodor.
"Edward the Hero" 7th March 2011 #05
Edward wants to be a hero like Harold.
"James to the Rescue" 8th March 2011 #06
James refuses to work with Toby as the rescue engine, but soon regrets his decision.
"Happy Hiro" 9th March 2011 #07
Hiro is feeling homesick, so Thomas tries to cheer him up by taking him to Misty Island.
"Up, Up and Away!" 10th March 2011 #08
Thomas and Percy deliver Mr. Bubbles' giant balloon.
"Henry's Happy Coal" 11th March 2011 #09
'Arry and Bert tease Henry about using special coal.
"Let it Snow" 14th March 2011 #10
Whilst collecting logs for an animal shelter, Thomas sings the Misty Island Snow Song in hopes of making it snow.
"Surprise, Surprise" 15th March 2011 #11
Thomas tries to hold a Christmas party at the Sodor Steamworks for his friends, but does not tell Victor.
"Spencer the Grand" 16th March 2011 #12
Spencer disobeys orders and tries to puff to the Duke and Duchess of Boxford's Summer House in the fog.
"Stop that Bus!" 17th March 2011 #13
Thomas takes Bertie on a tour, but Bertie has to pick up Dowager Hatt and her friends.
"Stuck on You" 18th March 2011 #14
Thomas and Butch do not listen to Victor's instructions, so they do not know how to work Butch's new magnet.
"Big Belle" 21st March 2011 #15
Belle's attempts to be friends with Toby only frighten the steam tram away.
"Kevin the Steamie" 22nd March 2011 #16
Kevin practices shunting so that he can take part in Thomas and Percy's game.
"Wonky Whistle" 23rd March 2011 #17
Thomas rushes off before his whistle can be properly fixed and scares Farmer McColl's animals.
"Percy the Snowman" 24th March 2011 #18
Thomas promises to take a depressed Percy to pick up Sir

Topham Hatt, but whilst Thomas is finishing his jobs, he only succeeds in covering Percy in snow.

"Tree Trouble" 25th March 2011 #19
The diesels and Thomas compete to find the best Christmas tree for the Steamworks and Dieselworks.
"Fiery Flynn" 28th March 2011 #20
Flynn tries to impress the diesels with his bravado with potentially disastrous results.

Specials Edit

  • Day of the Diesels

Song Edit

  • Hear the Engines Coming

Characters Edit

  • Thomas
  • Edward
  • Henry
  • Gordon
  • James
  • Percy
  • Toby
  • Emily
  • Spencer
  • Rosie
  • Whiff
  • Stanley
  • Hiro
  • Charlie
  • Bash and Dash
  • Ferdinand
  • Diesel
  • Mavis
  • 'Arry and Bert
  • Salty
  • Victor
  • Belle
  • Flynn
  • Den
  • Dart
  • Rocky
  • Bertie
  • Butch
  • Kevin
  • Harold
  • Cranky
  • Captain
  • Sir Topham Hatt
  • Lady Hatt
  • Dowager Hatt
  • Farmer McColl
  • The Duke of Boxford
  • Mr. Bubbles
  • The Sodor Search and Rescue Centre Manager
  • The Maithwaite Stationmaster
  • Workmen
  • The Schoolchildren
  • The Ginger-haired Boy
  • The Blonde-haired Boy
  • Norman (not named)
  • The Duchess of Boxford (does not speak)
  • Scruff (cameo)
  • Paxton (cameo)
  • Annie and Clarabel (cameo)
  • Henrietta (cameo)
  • Trevor (cameo)
  • Stephen Hatt (cameo)
  • Bridget Hatt (cameo)
  • Mr. Percival (cameo)
  • Jem Cole (cameo)
  • Alicia Botti (cameo)
  • Sodor Brass Band (cameo)
  • The Dairy Manager (cameo)
  • The Photographer (cameo)
  • The Bargeman (cameo)
  • The Fireman (cameo)
  • The Knapford Stationmaster (cameo)
  • The Teacher (cameo)
  • The Bird Watcher (cameo)
  • The Railway Inspector (cameo)
  • The Tree Specialists (cameo)
  • Three Sodor United Players (cameo)
  • The Laundry Lady (cameo)
  • Farmer Trotter (mentioned)
  • Father Christmas (mentioned)
  • Sir Handel (original concept only)
  • Peter Sam (original concept only)
  • Duke (original concept only)

Characters Introduced Edit

  • The Railway Coal Inspector
  • Dowager Hatt's Friends (do not speak)
  • Albert's Wife (cameo)

Half hour format Edit

When season 15 aired on PBS in the US and Nick Jr. in the UK, each broadcast airs two episodes, a song & a Down at the Station segments.

Exciting Friends Edit

  • Gordon and Ferdinand
  • Song: All You Need
  • Toby and Bash

Kindness with Friends Edit

  • Percy's New Friends
  • Song: All You Need
  • Emily and Dash

Learning Together Edit

  • James to the Rescue
  • Song: Go, Go Thomas
  • Down at the Station: The Steam Engine
  • Happy Hiro

Happy Engines Edit

  • Henry's Happy Coal
  • Song: Go, Go Thomas
  • Down at the Station: Coal
  • Edward the Hero

Fun in the Snow Edit

  • Let it Snow
  • Song: TBA
  • Percy the Snowman

Helping Each Other Edit

  • Stop that Bus!
  • Song: Roll Along
  • Down at the Station: Passengers
  • Spencer the Grand

Laughing Together Edit

  • Big Belle
  • Song: Go, Go Thomas!
  • Stuck on You

Slow Down!Edit Edit

  • Wonky Whistle
  • Song: Hear the Engines Coming
  • Down at the Station: Going Backwards
  • Up, Up and Away!

Special Times Edit

  • Surprise, Surprise
  • Song: TBA
  • Tree Trouble

Being Useful Edit

  • Kevin the Steamie
  • Song: Hear the Engines Coming
  • Down at the Station: Fireman
  • Fiery Flynn

Cast Edit

UK and AUS Edit

  • Michael Angelis as the narrator
  • Ben Small as Thomas, Toby and Ferdinand
  • Teresa Gallagher as Emily, Rosie, Belle, Mavis, Lady Hatt and the Ginger-haired Boy
  • Keith Wickham

as Edward, Henry, Gordon, James, Percy, Whiff, Dash, Salty, Den, Harold, Captain, Sir Topham Hatt, Dowager Hatt, Mr. Bubbles and the Railway Coal Inspector

  • Matt Wilkinson

as Spencer, Stanley, Charlie, Bash, Victor, Cranky, Kevin, Farmer McColl, the Duke of Boxford, the Maithwaite Stationmaster and the Sodor Search and Rescue Centre Manager

  • Rupert Degas as Den (Fiery Flynn only), Dart, Flynn, Bertie and Butch
  • Togo Igawa as Hiro
  • Kerry Shale as Diesel, 'Arry, Bert and Norman
  • William Hope as the Steamworks Worker and the Farm Hands

US and CAN Edit

  • Michael Brandon as the narrator, Diesel and Mr. Bubbles
  • Martin Sherman as Thomas and Percy
  • Jules de Jongh as Emily, Rosie, Mavis and Lady Hatt
  • William Hope

as Edward, Toby, Whiff, Bash, Rocky, the Duke of Boxford, the Maithwaite Stationmaster, the Steamworks Worker and the Farm Hands

  • Kerry Shale as Henry, Gordon, James, Dash, 'Arry, Bert, Norman, Harold, Kevin, Sir Topham Hatt, and the Railway Coal Inspector
  • Keith Wickham as Salty, Den, Captain and Dowager Hatt
  • Ben Small as Stanley
  • Teresa Gallagher as Belle and the Ginger-haired Boy
  • Rupert Degas as Den (Fiery Flynn only), Dart, Flynn and Bertie
  • Togo Igawa as Hiro
  • David Bedella as Victor
  • Glenn Wrage as Spencer, Charlie, Ferdinand, Cranky, Butch and the Sodor Search and Rescue Centre Manager

Trivia Edit

  • This season was supposed to be shown after Day of the Diesels, but was brought forwards for unknown reasons.
  • This season marks the first of a few things:
    • Butch's first speaking role in the television series.
    • Trevor's first appearance in full CGI.
    • Arlesdale End, Castle Loch, the Fishing Village and Wellsworth's first appearances in full CGI.
    • The first and only season to have Rupert Degas as Butch in the UK. Matt Wilkinson later took over this role in the sixteenth season.
    • The first season to have Rupert Degas as part of the voice cast.
    • The first season with Season 20 being the second not to have Thomas' name titled in any of the episodes.
    • The first and only season to date, where Thomas, Gordon and Percy have more roles than the rest of the Steam Team.
  • This season marks the last of a few things:
    • The last season in which Christopher Skala was executive producer.
    • The last season in which Jo Jordan was creative producer.
    • The last season to have Jukka Voutilaninen voice Hiro in the Finnish dub.
  • Percy's whistle now budges up and down when he uses it.
  • Jules de Jongh is mentioned in the UK credits despite not having a role.
  • On Netflix UK, this series was listed as being season 13. The mistake was later corrected.
  • In Finland, this season was shown on the website MTV Juniori before airing on television.