Sonds song

The twenty-first season of the television series will start airing sometime in 2017.

Episodes

 * 1) Hasty Hannah
 * 2) Dowager Hatt's Busy Day
 * 3) Emily in the Middle
 * 4) Terence Breaks the Ice
 * 5) Daisy's Perfect Christmas
 * 6) Confused Coaches
 * 7) The Big Freeze
 * 8) Thomas meets a Prime Minister

Songs

 * Set Friendship in Motion

Chararcters

 * Thomas
 * Edward
 * Henry
 * Gordon
 * James
 * Percy
 * Toby
 * Donald and Douglas
 * Oliver
 * Bill and Ben
 * Harvey
 * Emily
 * Spencer
 * Rosie
 * Hiro
 * Belle
 * Connor
 * Stephen
 * Timothy
 * Samson
 * Merlin
 * Hurricane
 * Diesel
 * Daisy
 * Dart
 * Den
 * Paxton
 * Philip
 * Hugo
 * Frankie
 * Stafford
 * Rheneas
 * Peter Sam
 * Rusty
 * Duke
 * Victor
 * Luke
 * Millie
 * Rex
 * Annie and Clarabel
 * Henrietta
 * Troublesome Trucks
 * Rocky
 * Slip Coaches
 * Jerome and Judy
 * Trevor
 * Terence
 * Harold
 * Sir Topham Hatt
 * Dowager Hatt

Duck, Flying Scotsman, Skarloey, Sir Handel, Duncan, Bertie, Harold and Kevin are also likely to appear.

Characters Introduced

 * Hannah
 * Ben (Prime Minister)

Segements

 * Rosie's School

UK and AUS

 * Mark Moraghan as the Narrator
 * John Hasler as Thomas and Rheneas
 * Keith Wickham as Edward, Henry, Gordon, Harvey, Stafford, Harold, Sir Topham Hatt and Dowager Hatt
 * Nigel Pilkington as Percy and Trevor
 * Rob Rackstraw as James, Toby, Donald and Hugo
 * Joe Mills as Douglas, Oliver, and Toad
 * Teresa Gallagher as Emily, Belle, Judy, Annie and Clarabel
 * Kerry Shale as Diesel
 * Nicola Stapleton as Rosie
 * Matt Wilkinson as Spencer, Kevin and Rusty
 * Tracy-Ann Oberman as Molly and Daisy
 * Steven Kynman as Peter Sam, Paxton and Dart
 * Robert Wilfort as Samson
 * Bob Golding as Stephen, Sidney, a Railway Inspector and a Steamworks Worker
 * Togo Igawa as Hiro
 * Jonathan Forbes as Connor
 * Miranda Raison as Millie
 * Mike Grady as Sir Robert Norramby
 * David Bedella as Victor
 * Michael Legge as Luke
 * Tim Whitnall as Timothy, Mike, and Jerome
 * Tom Stourton as Rex
 * Rasmus Hardiker as Philip
 * Lucy Montgomery as Hannah
 * Ben Kingsley as Prime Minister
 * Christopher Ragland as the Troublesome Trucks

USA

 * Mark Moraghan as the Narrator
 * Joseph May as Thomas
 * William Hope as Edward and Toby
 * Kerry Shale as Henry, Gordon, Diesel, Harold and Kevin
 * Rob Rackstraw as James, Donald and Hugo
 * Christopher Ragland as Percy, Trevor, and the Troublesome Trucks
 * Joe Mills as Douglas, Oliver, and Toad
 * Jules de Jongh as Emily
 * Keith Wickham as Harvey, Den, Sir Topham Hatt and Dowager Hatt
 * Glenn Wrage as Spencer
 * Nicola Stapleton as Rosie
 * Tracy-Ann Oberman as Molly and Daisy
 * John Hasler as Rheneas
 * Steven Kynman as Peter Sam, Paxton and Dart
 * Tim Whitnall as Timothy, Mike, and Jerome
 * Matt Wilkinson as Rusty
 * Teresa Gallagher as Belle, Judy, Annie and Clarabel
 * David Bedella as Victor
 * Robert Wilfort as Samson
 * Bob Golding as Stephen, Sidney, a Railway Inspector and a Steamworks Worker
 * Togo Igawa as Hiro
 * Jonathan Forbes as Connor
 * Miranda Raison as Millie
 * Mike Grady as Sir Robert Norramby
 * Michael Legge as Luke
 * Tom Stourton as Rex
 * Rasmus Hardiker as Philip
 * Lucy Montgomery as Hannah
 * Ben Kingsley as Prime Minister