 Mark MoraghanNarrator (voice) | Narrator (voice) |
 Joseph MayThomas (voice) | Thomas (voice) |
 William HopeEdward / Duke of Boxford / Toby (voice) | Edward / Duke of Boxford / Toby (voice) |
 Kerry ShaleHenry / Gordon / Mr. Percival / Kevin / Harold (voice) | Henry / Gordon / Mr. Percival / Kevin / Harold (voice) |
 Rob RackstrawJames / Hugo / The Thin Clergyman (voice) | James / Hugo / The Thin Clergyman (voice) |
| CChristopher RaglandPercy / Trevor (voice) | Percy / Trevor (voice) |
 Jules de JonghEmily / Caitlin / Duchess of Boxford / Judy / Annie / Clarabel / Children / Stephen Hatt / Bridget Hatt / Woman (voice) | Emily / Caitlin / Duchess of Boxford / Judy / Annie / Clarabel / Children / Stephen Hatt / Bridget Hatt / Woman (voice) |
| BBob GoldingStephen / Railway Inspector (voice) | Stephen / Railway Inspector (voice) |
 Rasmus HardikerPhilip (voice) | Philip (voice) |
 Keith WickhamSir Handel / Sir Topham Hatt / Dowager Hatt / Lord Callan / Salty / Captain / Various (voice) | Sir Handel / Sir Topham Hatt / Dowager Hatt / Lord Callan / Salty / Captain / Various (voice) |
 Tom StourtonDuncan (voice) | Duncan (voice) |
 Mike GradySir Robert Norramby (voice) | Sir Robert Norramby (voice) |
 Teresa GallagherLady Hatt / Stephen Hatt / Bridget Hatt (voice) (uncredited) | Lady Hatt / Stephen Hatt / Bridget Hatt (voice) (uncredited) |
 David MenkinPorter (voice) | Porter (voice) |
 David BedellaMayor of Sodor / Victor (voice) | Mayor of Sodor / Victor (voice) |
 Glenn WrageCranky (voice) | Cranky (voice) |
| JJoe MillsOliver / Toad (voice) | Oliver / Toad (voice) |
 Steven KynmanRyan / Knapford Station Speaker / Duck (voice) | Ryan / Knapford Station Speaker / Duck (voice) |
 Tracy-Ann ObermanDaisy (voice) | Daisy (voice) |
 Jamie Campbell BowerSkiff (voice) | Skiff (voice) |
 Tim WhitnallJerome (voice) | Jerome (voice) |
| MMatt WilkinsonCaptain Joe (voice) | Captain Joe (voice) |
 Maggie OllerenshawHenrietta (voice) | Henrietta (voice) |
