Rachael Louise Ragland is an English actress who joined the voice cast of Thomas & Friends in Big World! Big Adventures!. She previously worked on "Angelina Ballerina: The Next Steps". She narrated the Thomas & Friends Storytime podcast series in 2022 after it was revamped for the All Engines Go reboot, making her the first female storyteller for the English dub of the entire franchise.
Diesels (Except for Mavis & Boco, who are horrified by this) try to take over Sodor and be "Modern" for the railway, but it's up to the steam engines to try to stop that and that steam engines and diesel engines can be equal.