| Thomas & Friends (series 21) | |
|---|---|
| Country of origin |
UK US |
| No. of episodes | 18 |
| Release | |
| Original network |
Channel 5 (UK) Nickelodeon/Nick Jr. (US) |
| Original release | 18 September – 22 December 2017 |
| Series chronology | |
Thomas & Friends is a children's television series about the engines and other characters on the railways of the Island of Sodor, and is based on The Railway Series books written by the Rev. W. Awdry.
This article lists and details the episodes from series 21 of the show, which started airing on 18 September 2017 in the UK and on 15 December 2017 in the US. The series is narrated by Mark Moraghan.
Nicola Stapleton, Lucy Montgomery and Colin McFarlane join the cast from this year's special. Stapleton takes over the role of Rosie in the UK and US from Teresa Gallagher and Jules de Jongh, while Rob Rackstraw takes over the role of James in the UK from Keith Wickham.