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The eighteenth series of Thomas & Friends first aired on television on 25 August 2014 in the UK and on 4 November 2014 in the US. It contained twenty-six episodes. Like the seventeenth series, six episodes were released on DVD in the US the April before airing on television. It concluded airing on television in the UK on 31 July 2015.

Episodes

Production Order

Screenshot Title Written by Episode number #
OldReliableEdward112 Old Reliable Edward Andrew Brenner #01
Gordon teases Edward about being old and slow, so Thomas decides to make a plan to pay him out.
NotSoSlowCoaches112 Not So Slow Coaches Paul Larson
Laura Beaumont
#02
Annie and Clarabel unexpectedly become part of Caitlin's high-speed train.
FlatbedsofFear32 Flatbeds of Fear Paul Larson
Laura Beaumont
#03
Salty tells Thomas a story of some flatbeds which he called the "Flatbeds of Fear", causing paranoia among him, Henry and Emily.
DisappearingDiesels34 Disappearing Diesels Andrew Brenner #04
The diesels hide from Paxton as a joke, but Paxton takes the joke too seriously, as he believes that all of them had disappeared.
SignalsCrossed121 Signals Crossed Mark Huckerby
Nick Ostler
#05
Toby is nervous of Knapford Junction, as he does not know which signal is his.
Toad'sAdventure16 Toad's Adventure Mark Huckerby
Nick Ostler
#06
After Oliver brags about his own adventure from escaping the scrapyard, Toad decides he wants his own and soon gets one while being James' brake van.
DuckintheWater55 Duck in the Water Andrew Brenner #07
Duck gets stuck in very cold water and James causes confusion and delay helping him get unstuck.
DuckandtheSlipCoaches116 Duck and the Slip Coaches Mark Huckerby
Nick Ostler
#08
James steals Duck's idea of bringing special slip coaches to the railway.
ThomastheQuarryEngine79 Thomas the Quarry Engine Andrew Brenner #09
Diesel shows Mavis the sights of Sodor, while Thomas does all the work at the quarry.
ThomasandtheEmergencyCable68 Thomas and the Emergency Cable Andrew Brenner #10
One of Thomas' passengers pulls the emergency cable and damages Annie's wheel, so Clarabel is the only coach on the branch line.
EmilySavestheWorld31 Emily Saves the World Paul Larson
Laura Beaumont
Sam Wilkinson (additional material)
#11
Emily has to take a giant globe to the animal park, but when she wants to show her friends, the globe comes off her flatbed.
DuncantheHumbug66 Duncan the Humbug Davey Moore #12
The Thin Controller makes Duncan promise to be cheerful at Christmas time in order to get a new coat of paint, which proves to be very difficult for him.
DuncanandtheGrumpyPassenger31 Duncan and the Grumpy Passenger Davey Moore #13
Duncan gets fed up with a particularly grumpy passenger.
LastTrainforChristmas27 Last Train for Christmas Andrew Brenner #14
All the engines have to work hard during Christmas Eve to clear the snow for Connor's last train.
MarionandtheDinosaurs50 Marion and the Dinosaurs Andrew Brenner #15
Marion is spooked by some lifelike dinosaur models and thinks they are real dinosaurs, until she meets a new engine from the Mainland named Samson.
MarionandthePipe52 Marion and the Pipe Mark Huckerby
Nick Ostler
#16
Marion damages a water pipe and does not tell anyone.
MissingGator116 Missing Gator Andrew Brenner #17
Percy misses his friend Gator and struggles to forget about him.
TimothyandtheRainbowTruck85 Timothy and the Rainbow Truck
Timothy and the Rainbow Car
Davey Moore #18
Bill and Ben send Timothy on a wild goose chase for a rainbow coloured truck, but their trick gets them in trouble.
SamsonSentforScrap122 Samson Sent for Scrap Mark Huckerby
Nick Ostler
#19
Harvey and Samson have to clean up the island of scrap, but Samson takes the job too seriously.
SamsonatYourService49 Samson at Your Service Davey Moore #20
Samson takes the express coaches by mistake but refuses to admit it and does not listen to the other engines.
ThePerfectGift94 The Perfect Gift Davey Moore #21
Percy looks to find Reg the perfect Christmas gift.
MillieandtheVolcano121 Millie and the Volcano Andrew Brenner #22
After being laughed at, Millie is determined to get back at Samson.
NoSteamWithoutCoal83 No Steam Without Coal Davey Moore #23
Bill and Ben forget the coal shipment and make fun of Timothy for using oil instead.
Spencer'sVIP60 Spencer's VIP Andrew Brenner #24
All the engines compete to get to take a Deputy Minister home to the Mainland, but they show off just like Spencer, and make silly mistakes.
LongLostFriend113 Long Lost Friend Mark Huckerby
Nick Ostler
#25
On Christmas, Gator returns to the island and is very eager to see Percy.
Toad'sBrightIdea90 Toad's Bright Idea Davey Moore #26
Oliver breaks down, so Gator is sent to take his train with Toad, but has a faulty lamp which keeps going out.

United KingdomUK

Screenshot Title Written by Original UK release date Episode
number #
OldReliableEdward112 Old Reliable Edward Andrew Brenner 25 August 2014 #01
Gordon teases Edward about being old and slow, so Thomas decides to make a plan to pay him out.
NotSoSlowCoaches112 Not So Slow Coaches Paul Larson
Laura Beaumont
26 August 2014 #02
Annie and Clarabel unexpectedly become part of Caitlin's high-speed train.
FlatbedsofFear32 Flatbeds of Fear Paul Larson
Laura Beaumont
27 August 2014 #03
Salty tells Thomas a story of some flatbeds which he called the "Flatbeds of Fear", causing paranoia among him, Henry and Emily.
DisappearingDiesels34 Disappearing Diesels Andrew Brenner 28 August 2014 #04
The diesels hide from Paxton as a joke, but Paxton takes the joke too seriously, as he believes that all of them had disappeared.
SignalsCrossed121 Signals Crossed Mark Huckerby
Nick Ostler
29 August 2014 #05
Toby is nervous of Knapford Junction, as he does not know which signal is his.
Toad'sAdventure16 Toad's Adventure Mark Huckerby
Nick Ostler
1 September 2014 #06
After Oliver brags about his own adventure from escaping the scrapyard, Toad decides he wants his own and soon gets one while being James' brake van.
DuckintheWater55 Duck in the Water Andrew Brenner 2 September 2014 #07
When James collects Rocky to help Duck, he becomes impatient and causes trouble when Rocky's crane arm is not secured.
DuckandtheSlipCoaches116 Duck and the Slip Coaches Mark Huckerby
Nick Ostler
3 September 2014 #08
James steals Duck's idea of bringing special slip coaches to the railway.
ThomastheQuarryEngine79 Thomas the Quarry Engine Andrew Brenner 4 September 2014 #09
Diesel shows Mavis the sights of Sodor, while Thomas does all the work at the quarry.
ThomasandtheEmergencyCable68 Thomas and the Emergency Cable Andrew Brenner 5 September 2014 #10
One of Thomas' passengers pulls the emergency cable and damages Annie's wheel, so Clarabel is the only coach on the branch line.
DuncanandtheGrumpyPassenger31 Duncan and the Grumpy Passenger Davey Moore 8 September 2014 #11
Duncan gets fed up with a particularly grumpy passenger.
MarionandthePipe52 Marion and the Pipe Mark Huckerby
Nick Ostler
9 September 2014 #12
Marion damages a water pipe and does not tell anyone.
MissingGator116 Missing Gator Andrew Brenner 10 September 2014 #13
Percy misses his friend Gator and struggles to forget about him.
NoSteamWithoutCoal83 No Steam Without Coal Davey Moore 11 September 2014 #14
Bill and Ben forget the coal shipment and make fun of Timothy for using oil instead.
Spencer'sVIP60 Spencer's VIP Andrew Brenner 12 September 2014 #15
All the engines compete to get to take a Deputy Minister home to the Mainland, but they show off just like Spencer, and make silly mistakes.
Toad'sBrightIdea90 Toad's Bright Idea Davey Moore 15 September 2014 #16
Oliver breaks down, so Gator is sent to take his train with Toad, but has a faulty lamp which keeps going out.
LongLostFriend113 Long Lost Friend Mark Huckerby
Nick Ostler
23 December 2014 #17
On Christmas, Gator returns to the island and is very eager to see Percy.
LastTrainforChristmas27 Last Train for Christmas Andrew Brenner 24 December 2014 #18
All the engines have to work hard during Christmas Eve to clear the snow for Connor's last train.
DuncantheHumbug66 Duncan the Humbug Davey Moore 25 December 2014 #19
The Thin Controller makes Duncan promise to be cheerful at Christmas time in order to get a new coat of paint, which proves to be very difficult for him.
ThePerfectGift94 The Perfect Gift Davey Moore 26 December 2014 #20
Percy looks to find Reg the perfect Christmas gift.
EmilySavestheWorld31 Emily Saves the World Paul Larson
Laura Beaumont
Sam Wilkinson
27 July 2015 #21
Emily has to take a giant globe to the animal park, but when she wants to show her friends, the globe comes off her flatbed.
TimothyandtheRainbowTruck85 Timothy and the Rainbow Truck Davey Moore 28 July 2015 #22
Bill and Ben send Timothy on a wild goose chase for a rainbow coloured truck, but their trick gets them in trouble.
MarionandtheDinosaurs50 Marion and the Dinosaurs Andrew Brenner 29 July 2015 #23
Marion is spooked by some lifelike dinosaur models and thinks they are real dinosaurs, until she meets a new engine from the Mainland named Samson.
SamsonatYourService49 Samson at Your Service Davey Moore 30 July 2015 #24
Samson takes the express coaches by mistake but refuses to admit it and does not listen to the other engines.
SamsonSentforScrap122 Samson Sent for Scrap Mark Huckerby
Nick Ostler
31 July 2015 #25
Harvey and Samson have to clean up the island of scrap, but Samson takes the job too seriously.
MillieandtheVolcano121 Millie and the Volcano Andrew Brenner 31 July 2015 #26
After being laughed at, Millie is determined to get back at Samson.

USAUS

Screenshot Title Written by Original US release date Episode
number #
FlatbedsofFear32 Flatbeds of Fear Paul Larson
Laura Beaumont
4 November 2014 #01
Salty tells Thomas a story of some flatbeds which he called the "Flatbeds of Fear", causing paranoia among him, Henry and Emily.
DisappearingDiesels34 Disappearing Diesels Andrew Brenner 4 November 2014 #02
The diesels hide from Paxton as a joke, but Paxton takes the joke too seriously, as he believes that all of them had disappeared.
DuncantheHumbug66 Duncan the Humbug Davey Moore 17 December 2014 #03
Mr. Percival makes Duncan promise to be cheerful at Christmas time in order to get a new coat of paint, which proves to be very difficult for him.
ThePerfectGift94 The Perfect Gift Davey Moore 17 December 2014 #04
Percy looks to find Reg the perfect Christmas gift.
LastTrainforChristmas27 Last Train for Christmas Andrew Brenner 18 December 2014 #05
All the engines have to work hard during Christmas Eve to clear the snow for Connor's last train.
LongLostFriend113 Long Lost Friend Mark Huckerby
Nick Ostler
18 December 2014 #06
On Christmas, Gator returns to the island and is very eager to see Percy.
MarionandthePipe52 Marion and the Pipe Mark Huckerby
Nick Ostler
9 March 2015 #07
Marion damages a water pipe and does not tell anyone.
MissingGator116 Missing Gator Andrew Brenner 9 March 2015 #08
Percy misses his friend Gator and struggles to forget about him.
DuncanandtheGrumpyPassenger31 Duncan and the Grumpy Passenger Davey Moore 10 March 2015 #09
Duncan gets fed up with a particularly grumpy passenger.
Spencer'sVIP60 Spencer's VIP Andrew Brenner 10 March 2015 #10
All the engines compete to get to take a Deputy Minister home to the Mainland, but they show off just like Spencer, and make silly mistakes.
OldReliableEdward112 Old Reliable Edward Andrew Brenner 12 May 2015 #11
Gordon teases Edward about being old and slow, so Thomas decides to make a plan to pay him out.
NotSoSlowCoaches112 Not So Slow Coaches Paul Larson
Laura Beaumont
12 May 2015 #12
Annie and Clarabel unexpectedly become part of Caitlin's high-speed train.
Toad'sAdventure16 Toad's Adventure Mark Huckerby
Nick Ostler
13 May 2015 #13
After Oliver brags about his own adventure from escaping the scrapyard, Toad decides he wants his own and soon gets one while being James' brake van.
DuckandtheSlipCoaches116 Duck and the Slip Coaches Mark Huckerby
Nick Ostler
13 May 2015 #14
James steals Duck's idea of bringing special slip coaches to the railway.
ThomastheQuarryEngine79 Thomas the Quarry Engine Andrew Brenner 14 May 2015 #15
Diesel shows Mavis the sights of Sodor, while Thomas does all the work at the quarry.
DuckintheWater55 Duck in the Water Andrew Brenner 14 May 2015 #16
When James collects Rocky to help Duck, he becomes impatient and causes trouble when Rocky's crane arm is not secured.
SignalsCrossed121 Signals Crossed Mark Huckerby
Nick Ostler
15 May 2015 #17
Toby is nervous of Knapford Junction, as he does not know which signal is his.
ThomasandtheEmergencyCable68 Thomas and the Emergency Cable Andrew Brenner 15 May 2015 #18
One of Thomas' passengers pulls the emergency cable and damages Annie's wheel, so Clarabel is the only coach on the branch line.
NoSteamWithoutCoal83 No Steam Without Coal Davey Moore 18 May 2015 #19
Bill and Ben forget the coal shipment and make fun of Timothy for using oil instead.
Toad'sBrightIdea90 Toad's Bright Idea Davey Moore 18 May 2015 #20
Oliver breaks down, so Gator is sent to take his train with Toad, but has a faulty lamp which keeps going out.
TimothyandtheRainbowTruck85 Timothy and the Rainbow Car Davey Moore 9 May 2016 #21
Bill and Ben send Timothy on a wild goose chase for a rainbow colored car, but their trick gets them in trouble.
SamsonSentforScrap122 Samson Sent for Scrap Mark Huckerby
Nick Ostler
9 May 2016 #22
Harvey and Samson have to clean up the island of scrap, but Samson takes the job too seriously.
MarionandtheDinosaurs50 Marion and the Dinosaurs Andrew Brenner 10 May 2016 #23
Marion is spooked by some lifelike dinosaur models and thinks they are real dinosaurs, until she meets a new engine from the Mainland named Samson.
MillieandtheVolcano121 Millie and the Volcano Andrew Brenner 10 May 2016 #24
After being laughed at, Millie is determined to get back at Samson.
EmilySavestheWorld31 Emily Saves the World Paul Larson
Laura Beaumont
Sam Wilkinson
11 May 2016 #25
Emily has to take a giant globe to the animal park, but when she wants to show her friends, the globe comes off her flatbed.
SamsonatYourService49 Samson at Your Service Davey Moore 11 May 2016 #26
Samson takes the express coaches by mistake but refuses to admit it and does not listen to the other engines.

JapanJPN

Screenshot Title Written by Original JPN release date Episode
number #
OldReliableEdward112 たよりになるエドワード
(Old Reliable Edward)
Andrew Brenner 5 October 2014 #01
Gordon teases Edward about being old and slow, so Thomas decides to make a plan to pay him out.
NotSoSlowCoaches112 はやすぎよ おそすぎよ
(Not So Slow Coaches)
Paul Larson
Laura Beaumont
5 October 2014 #02
Annie and Clarabel unexpectedly become part of Caitlin's high-speed train.
FlatbedsofFear32 きょうふのかしゃのおと
(Flatbeds of Fear)
Paul Larson
Laura Beaumont
12 October 2014 #03
Salty tells Thomas a story of some flatbeds which he called the "Flatbeds of Fear", causing paranoia among him, Henry and Emily.
DisappearingDiesels34 きえたディーゼルきかんしゃたち
(Disappearing Diesels)
Andrew Brenner 12 October 2014 #04
The diesels hide from Paxton as a joke, but Paxton takes the joke too seriously, as he believes that all of them had disappeared.
SignalsCrossed121 トビーとしんごう
(Signals Crossed)
Mark Huckerby
Nick Ostler
19 October 2014 #05
Toby is nervous of Knapford Junction, as he does not know which signal is his.
Toad'sAdventure16 トードのぼうけん
(Toad's Adventure)
Mark Huckerby
Nick Ostler
19 October 2014 #06
After Oliver brags about his own adventure from escaping the scrapyard, Toad decides he wants his own and soon gets one while being James' brake van.
ThomastheQuarryEngine79 いしきりばのトーマス
(Thomas the Quarry Engine)
Andrew Brenner 26 October 2014 #07
Diesel shows Mavis the sights of Sodor, while Thomas does all the work at the quarry.
ThomasandtheEmergencyCable68 トーマスときんきゅうじたい
(Thomas and the Emergency Cable)
Andrew Brenner 26 October 2014 #08
One of Thomas' passengers pulls the emergency cable and damages Annie's wheel, so Clarabel is the only coach on the branch line.
MissingGator116 ゲイターにあいたい
(Missing Gator)
Andrew Brenner 2 November 2014 #09
Percy misses his friend Gator and struggles to forget about him.
NoSteamWithoutCoal83 せきたんかないビルとベン
(No Steam Without Coal)
Davey Moore 2 November 2014 #10
Bill and Ben forget the coal shipment and make fun of Timothy for using oil instead.
DuncantheHumbug66 ダンカンはもんくばっかり
(Duncan the Humbug)
Davey Moore 21 December 2014 #11
Mr. Percival makes Duncan promise to be cheerful at Christmas time in order to get a new coat of paint, which proves to be very difficult for him.
LongLostFriend113 きみはたいせつなともだち
(Long Lost Friend)
Mark Huckerby
Nick Ostler
21 December 2014 #12
On Christmas, Gator returns to the island and is very eager to see Percy.
DuncanandtheGrumpyPassenger31 ダンカンとふきげんなおきゃくさん
(Duncan and the Grumpy Passenger)
Davey Moore 28 December 2014 #13
Duncan gets fed up with a particularly grumpy passenger.
MarionandthePipe52 ショベルきかんしゃマリオン
(Marion and the Pipe)
Mark Huckerby
Nick Ostler
28 December 2014 #14
Marion damages a water pipe and does not tell anyone.
DuckintheWater55 みずにつかったダック
(Duck in the Water)
Andrew Brenner 4 January 2015 #15
When James collects Rocky to help Duck, he becomes impatient and causes trouble when Rocky's crane arm is not secured.
DuckandtheSlipCoaches116 ダックとスリップコーチ
(Duck and the Slip Coaches)
Mark Huckerby
Nick Ostler
4 January 2015 #16
James steals Duck's idea of bringing special slip coaches to the railway.
Spencer'sVIP60 スペンサーとふくだいじん
(Spencer's VIP)
Andrew Brenner 11 January 2015 #17
All the engines compete to get to take a Deputy Minister home to the Mainland, but they show off just like Spencer, and make silly mistakes.
Toad'sBrightIdea90 ゲイターとトード
(Toad's Bright Idea)
Davey Moore 11 January 2015 #18
Oliver breaks down, so Gator is sent to take his train with Toad, but has a faulty lamp which keeps going out.
EmilySavestheWorld31 エミリーちきゅうをすくう?
(Emily Saves the World)
Paul Larson
Laura Beaumont
Sam Wilkinson
18 January 2015 #19
Emily has to take a giant globe to the animal park, but when she wants to show her friends, the globe comes off her flatbed.
TimothyandtheRainbowTruck85 ティモシーとにじいろのかしゃ
(Timothy and the Rainbow Truck)
Davey Moore 18 January 2015 #20
Bill and Ben send Timothy on a wild goose chase for a rainbow colored truck, but their trick gets them in trouble.
MarionandtheDinosaurs50 マリオンときょうりゅう
(Marion and the Dinosaurs)
Andrew Brenner 25 January 2015 #21
Marion is spooked by some lifelike dinosaur models and thinks they are real dinosaurs, until she meets a new engine from the Mainland named Samson.
SamsonatYourService49 サムソンがおとどけ
(Samson at Your Service)
Davey Moore 25 January 2015 #22
Samson takes the express coaches by mistake but refuses to admit it and does not listen to the other engines.
SamsonSentforScrap122 サムソンとスクラップ
(Samson Sent for Scrap)
Mark Huckerby
Nick Ostler
29 March 2015 #23
Harvey and Samson have to clean up the island of scrap, but Samson takes the job too seriously.
MillieandtheVolcano121 ミリーときょうりゅうパーク
(Millie and the Volcano)
Andrew Brenner 29 March 2015 #24
After being laughed at, Millie is determined to get back at Samson.
ThePerfectGift94 レッジのクリスマスプレゼント
(The Perfect Gift)
Davey Moore 18 December 2016 #25
Percy looks to find Reg the perfect Christmas gift.
LastTrainforChristmas27 クリスマスのさいしゅうれっしゃ
(Last Train for Christmas)
Andrew Brenner 18 December 2016 #26
All the engines have to work hard during Christmas Eve to clear the snow for Connor's last train.

Songs

Screenshot Title Composers Original release date
Santa'sLittleEngine129 It's Christmas Time Eggplant LF 17 December 2014 (US)
Spencer'sVIP141 The Best Friends Express Eggplant LF 11 May 2015 (US)


Characters

Returning Characters

Characters Introduced

Locations

Half Hour Format

When Series 18 aired on PBS Kids in the US, each broadcast included two episodes, a song, a Mr. Perkins' Railway segment and Guess Who? Puzzle segments. When the series was broadcast on Nick Jr. Too, the segments were omitted.

Fast & Reliable

There's Always a Good Explanation

  • Flatbeds of Fear
  • Song: Searching Everywhere
  • Mr. Perkins' Railway: Sounds of the Railway
  • Disappearing Diesels
  • Guess Who? Puzzles - Toad and Jack

Special Friends

  • Toad's Adventure
  • Song: Hey, Hey Thomas!
  • Mr. Perkins' Railway: End of the Day
  • Duck and the Slip Coaches
  • Guess Who? Puzzles - Jack and Marion

Please Be Patient

  • Thomas the Quarry Engine
  • Song: On a Journey Today
  • Mr. Perkins' Railway: Wash Down
  • Duck in the Water
  • Guess Who? Puzzles - Bill and Ben and Samson

Signals & Alarms

  • Signals Crossed
  • Song: Hey, Hey Thomas
  • Mr. Perkins' Railway: Railway Signals
  • Thomas and the Emergency Cable
  • Guess Who? Puzzles - Duncan and Harvey

Going Underground

  • Marion and the Pipe
  • Song: Let's Be Brave
  • Mr. Perkins' Railway: Miniature Railway
  • Missing Gator
  • Guess Who? Puzzles - Dash and Flynn

Christmas Cheer

  • Duncan the Humbug
  • Song: It's Christmas Time
  • Mr. Perkins' Railway: Who Works on the Railway?
  • The Perfect Gift
  • Guess Who? Puzzle - Percy

Passengers

  • Duncan and the Grumpy Passenger
  • Song: Working Together
  • Mr. Perkins' Railway: Different Types of Engines
  • Spencer's VIP
  • Guess Who? Puzzles - Dash and Luke

Illuminating Minds

  • No Steam Without Coal
  • Song: Monsters Everywhere
  • Mr. Perkins' Railway: How Steam Engines Use Coal
  • Toad's Bright Idea
  • Guess Who? Puzzles - Toad and Porter

Coming Home for Christmas

  • Last Train for Christmas
  • Song: It's Christmas Time
  • Mr. Perkins' Railway: Railway Maintenance
  • Long Lost Friend
  • Guess Who? Puzzles - Skarloey and Connor

Recycle Recycle Recycle!

  • Timothy and the Rainbow Car
  • Song: Let's Be Brave
  • Mr. Perkins' Railway: Different Types of Engines
  • Samson Sent for Scrap
  • Guess Who? Puzzles - Duck and Porter

Jurassic Sodor

  • Marion and the Dinosaurs
  • Song: Monsters Everywhere
  • Mr. Perkins' Railway: How Steam Engines Use Water
  • Millie and the Volcano

Special Deliveries

  • Emily Saves the World
  • Song: Searching Everywhere
  • Mr. Perkins' Railway: Turning Around
  • Samson at Your Service

Cast

UK

US

  • Martin Sherman as Thomas, Percy and Diesel
  • William Hope as Edward, Toby, Rocky and the Dock Manager
  • Kerry Shale as Henry, Gordon, James, Scruff, Sir Topham Hatt, Mr. Percival, Some Passengers and Some Workmen
  • Steven Kynman as Duck, Paxton, Dart, Peter Sam and the Third Slip Coach
  • Joe Mills as Oliver, Toad and the Welsh Bird Watcher
  • Jules de Jongh as Emily, the Blond-haired Boy, Some Passengers and Some Children
  • Jonathan Broadbent as Bill, Ben and the First Slip Coach
  • Keith Wickham as Harvey, Salty, Den, Stafford, Skarloey, Bertie, Captain, Dowager Hatt, the Wellsworth Stationmaster, Some Passengers, Thomas' Guard, the Grumpy Passenger, the Groundsman, the Postman and the Bird Watcher
  • Glenn Wrage as Spencer, Cranky, one of Sir Topham Hatt's Assistants, Gator's Driver and the Steamworks Worker
  • Ben Small as Stanley, Charlie, Rheneas, the Troublesome Trucks and Owen
  • Togo Igawa as Hiro
  • Bob Golding as Stephen and Sidney
  • Jonathan Forbes as Connor
  • Rebecca O'Mara as Caitlin and the Second Slip Coach
  • David Menkin as Porter
  • Clive Mantle as Gator
  • Tim Whitnall as Timothy, Reg, the Deputy Minister and the Man with the Hat
  • Olivia Colman as Marion
  • Robert Wilfort as Samson
  • Teresa Gallagher as Mavis, Annie, Clarabel, the Teacher, the Lady with the Big Hat, Station Speakers, Some Passengers and Some Children
  • Matt Wilkinson as Rusty, Some Passengers and Some Workmen
  • Tom Stourton as Duncan
  • David Bedella as Victor
  • Michael Legge as Luke
  • Miranda Raison as Millie and the Knapford Station Speaker
  • Maggie Ollerenshaw as Henrietta
  • Mike Grady as Sir Robert Norramby

Trivia

  • Episodes one to ten have a copyright of 2013; the rest have a copyright of 2014.
  • The final six episodes of this series were sold to PBS, Milkshake, ABC, FOUR, Minimax and JimJam as part of the Series 19 block, despite being produced with the eighteenth series.
  • This series marks the first of many things:
  • This series marked the only series of a few things:
  • This series marked the last of several things:
    • The last series to have Ben Small and Martin Sherman as part of the voice cast:
    • The last series to have episodes written by Paul Larson and Laura Beaumont until the twenty-fourth series.
    • The last series to have Keith Wickham as the voice of Percy in the UK dub. Nigel Pilkington took over the role starting with the next series.
    • The last series to have Rokurō Naya as the Fat Controller in the Japanese dub.
    • The last series to have Duncan voiced by Chikara Osaka in the Japanese dub as well as the last series to have him as part of the Japanese voice cast, although he was supposed to reprise his role as Duncan in the twenty-fourth series episode The Great Little Railway Show, due to Tom Stourton declining the role (in which he would have to record one line of dialogue for Duncan) after Nobuaki Kanemitsu voiced Duncan in the twentieth series. It is the last series to have Hideyuki Kanaya as part of the Japanese voice cast.
    • The last series to have Sir Topham Hatt and James voiced by Kerry Shale in the US. Keith Wickham and Rob Rackstraw took over the respective roles beginning with The Adventure Begins.
    • The last series to have Malay dub.
    • The last series to have three Russian versions of the series, two Russian dubs from Carousel and JimJam and the Baltic Russian voice-over is from Kidzone TV that was created by Estonia.
    • The last series to have a Russian re-dub that was produced by JimJam.
    • The final series where the original CGI intro and credits from the Nitrogen era are used. This is also the final series with the original rendition of the Engine Roll Call. Despite this, a few latest DVD releases which contained the next series (with some sixteenth series or eighteenth series) episodes retain these. When the six episodes from Dinos and Discoveries aired on PBS Kids in May 2016, it used the next series Engine Roll Call, opening and ending.
    • The last series to feature Ferdinand physically.
    • The last series not to feature Philip.
    • The last series where the word "Whistle" is not translated in Korean.
    • The last series to not feature Bridget Hatt.
  • This is the second series not to feature Stephen Hatt.
  • Like the seventeenth series, although Arc Productions had officially taken over the animation aspects of the television series, the episodes still used the opening titles and closing credits made by Nitrogen Studios. This was the final series to use their opening and closing footage and from the nineteenth series, the opening and closing footage were made by Arc Productions.
  • According to Ryan Hagan of SiF, the episodes in Spills and Thrills were going to be part of this series.
  • In the Estonian, Latvian, Lithuanian, Baltic Russian and Vietnamese voice-overs, the UK dub can be heard in the background as a dubbing track was not used.
  • In the Romanian, Norwegian, Estonian (voice-over), Latvian (voice-over), Lithuanian (voice-over), Hungarian, Serbian, Czech, Polish, Ukrainian, Baltic Russian (voice-over), Greek, Turkish, Indonesian, Thai, Chinese Mandarin, Taiwanese Mandarin and Cantonese dubs, they credited Mark Moraghan as the narrator, even though they were redubbed into their respective languages.
  • In the European Portuguese and Russian dubs of JimJam airings, Mark Moraghan was credited as the narrator, even though they were redubbed into their respective languages.
  • This series has the most Christmas episodes out of any series at 4.