Series 18

The eighteenth season of the television series will begin airing on August 25th 2014 in the UK and during the Fall in the US. It will contain twenty-six episodes. Like the seventeenth season, five episodes were released on DVD in the USA before airing on television.

Episodes

 * 1) Old Reliable Edward - The bigger engines tease Edward for being old and unreliable, especially Gordon.
 * 2) Not So Slow Coaches - Annie and Clarabel unexpectedly become part of Caitlin's high-speed train.
 * 3) Flatbeds of Fear - Salty tells the story of the "Flatbeds of Fear" which spooks the engines.
 * 4) Disappearing Diesels - The Diesels hide from Paxton.
 * 5) Signals Crossed - Toby is nervous when the signal at Knapford stays red.
 * 6) Toad's Adventure - Toad has an adventure on the main line with James.
 * 7) Duck in the Water - James has to rescue Duck from a flood, but ends up making things a whole lot worse.
 * 8) Duck and the Slip Coaches - James runs into trouble with some slip coaches which are used on the Great Western Railway.
 * 9) Thomas the Quarry Engine - Thomas works at the quarry while Diesel takes Mavis to see the sights of Sodor.
 * 10) Thomas and the Emergency Cable - Thomas has to stop quickly when a passenger pulls the emergency cable.
 * 11) Duncan and the Grumpy Passenger - Duncan tries his best to stop a passenger from complaining.

Characters

 * Thomas
 * Edward
 * Henry
 * Gordon
 * James
 * Percy
 * Toby
 * Duck
 * Oliver
 * Emily
 * Hiro
 * Charlie
 * Connor
 * Caitlin
 * Porter
 * Gator
 * Diesel
 * Mavis
 * Salty
 * Den
 * Dart
 * Paxton
 * Sidney
 * Skarloey
 * Duncan
 * Rusty
 * Annie and Clarabel
 * Henrietta
 * Toad
 * Cranky
 * Reg
 * Sir Topham Hatt
 * Dowager Hatt
 * The Wellsworth Stationmaster
 * Bill and Ben (cameo)
 * Harvey (cameo)
 * Rosie (cameo)
 * Stanley (cameo)
 * 'Arry and Bert (cameo)
 * Norman (cameo)
 * Stafford (cameo)
 * Rheneas (cameo)
 * Sir Handel (cameo)
 * Peter Sam (cameo)
 * Rocky (cameo)
 * Bertie (cameo)
 * Owen (cameo)
 * The Teacher (cameo)

Donald, Douglas, Marion, Timothy, Samson, and Millie may also appear.

UK and AUS

 * Mark Moraghan as the narrator
 * Ben Small as Thomas and Toby
 * Keith Wickham as Henry, James, Percy, Salty, Skarloey, Den, Sir Topham Hatt, Dowager Hatt and the Wellsworth Stationmaster
 * Teresa Gallagher as Emily, Mavis, Annie and Clarabel
 * Kerry Shale as Diesel
 * Steven Kynman as Duck, Porter, Paxton and Dart
 * Togo Igawa as Hiro
 * Jonathan Forbes as Connor
 * Rebecca O'Mara as Caitlin
 * Matt Wilkinson as Charlie, Rusty and Cranky
 * Bob Golding as Sidney
 * Tim Whitnall as Reg
 * Joe Mills as Oliver and Toad

USA

 * Mark Moraghan as the narrator
 * Martin Sherman as Thomas, Percy and Diesel
 * Kerry Shale as Henry, Gordon, James, and Sir Topham Hatt
 * Keith Wickham as Salty, Skarloey, Den and Dowager Hatt
 * Teresa Gallagher as Mavis, Annie and Clarabel
 * Steven Kynman as Duck, Paxton and Dart
 * Jonathan Forbes as Connor
 * Rebecca O'Mara as Caitlin
 * Togo Igawa as Hiro
 * Ben Small as Charlie
 * Bob Golding as Sidney
 * David Menkin as Porter
 * Glenn Wrage as Cranky
 * Matt Wilkinson as Rusty
 * Maggie Ollerenshaw as Henrietta
 * Clive Mantle as Gator
 * Tim Whitnall as Reg
 * Joe Mills as Oliver and Toad
 * Tom Stourton
 * Jules de Jongh as Emily