Series 25 of Thomas & Friends: Big World! Big Adventures! will begin airing on Netflix (US) and on Milkshake! (UK) and ABC Kids (Australia) in July 2021.


  1. Merlin's Migration
  2. Thomas Meets Luiz
  3. Stepney's Adventure
  4. A New Friend in Need
  5. Unlucky Ursula
  6. Trevor to the Rescue
  7. Untitled India Episode
  8. Crosspatch
  9. Bucking Bronco
  10. Stick-in-the-Mud
  11. Ducks and Dukes
  12. Untitled China Episode
  13. Elizabeth and Trevor
  14. Untitled Australia Episode
  15. Untitled Italy Episode
  16. Gone with the Fog
  17. Flying Scotsman Can't Fly
  18. Sidney and the Skunk
  19. Charlie's Find
  20. Belle's Treasure Hunt
  21. Millie the Smartest


Characters Introduced


UK and AUS

US and CAN


  • This is the first series of a few things:
    • Stepney, George, Elizabeth, and Nancy's first appearances in full CGI.
    • Lexi, Theo, Hurricane, and Frankie's first appearance and speaking role in an episode.
    • Hugo, Rheneas, and Toad's first appearances since Journey Beyond Sodor.
  • This is the only series of a few things:
    • The only series in where Porter, Winston, and Philip do not appear since their introductions.
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