ITV’s huge child star now from BBC Casualty to a fantastic piece of trivia about a well-known actor from British television
- by btv2025
- Posted on 8 June, 2025
This is a fantastic piece of trivia about a well-known actor from British television!
The “huge child star” from an ITV show who also appeared in BBC’s Casualty and now voices an iconic character is John Hasler.

Here’s the breakdown:
- ITV Child Star: John Hasler was famously known as T-shirt in the immensely popular CITV (Children’s ITV) series T-Bag (which ran from 1985 to 1992). He was a key figure in the show, acting as the sidekick to the magical, mischievous T-Bag.
- BBC Casualty: He also appeared in the long-running BBC medical drama Casualty.
- Iconic Voice Role You Never Knew: Today, John Hasler is most widely recognized (though often unknowingly) as the voice of Thomas the Tank Engine in the beloved animated series Thomas & Friends for English-speaking audiences globally.
He has also lent his voice to other projects, including voicing Timon the meerkat in the West End production of The Lion King and James Jones in Fireman Sam.
This is a fantastic piece of trivia about a well-known actor from British television! The “huge child star” from an ITV show who also appeared in BBC’s Casualty and now voices an iconic character is John Hasler. Here’s the breakdown: ITV Child Star: John Hasler was famously known as T-shirt in the immensely popular…