Prince Harry has appeared in his first job since he made the controversial decision to resign as a senior member of The Royal Family earlier this year.
Harry and former Suits actress Meghan Markle made the decision to step back in order to live a financially independent lifestyle while splitting their time between the UK and Los Angeles.
During the landmark episode of Thomas and Friends, Harry, 35, is seen sitting in an armchair while holding a copy of the iconic children's book as he speaks about the 75th-anniversary episode, aptly named: Thomas & Friends: The Royal Engine.
With Thomas reigning over households for 75 years, it comes as no surprise that the programme has featured multiple A-listers lending their voice to characters.
Actress Rosamund Pike has also appeared in the show lending her voice to the Duchess of Loughborough.
Speaking about celebs who have participated, producer Ian McCue said: "I think all our voice actors are stars.
"They are such a talented group of people, but it is exciting every now and then to bring in a household celebrity name, and Thomas has had its fair share.
"Recently, we have had the pleasure to work with the likes of Olivia Colman, John Hurt, Eddie Redmayne, Jamie Campbell Bower and Hugh Bonneville, who are all top of their game and we were very lucky to get the opportunity to work with them."
Chatting about appearing on the programme, Harry said: "Thomas the Tank Engine has been a comforting, familiar face to so many families over the last 75 years - entertaining, educating and inspiring children on important issues through exciting stories and characters.
"I certainly have fond memories of growing up with Thomas & Friends and being transported to new places through his adventures. I am very proud to have been asked to take part in this special episode.
"I wish Thomas & Friends a very happy anniversary."
During the special episode, Thomas makes the journey to carry Sir Topham Hatt to meet Her Majesty The Queen before meeting the Duchess of Loughborough en route.
Prince Harry's episode was filmed in January, with a donation being made to a charity rather than him receiving a fee.