Ellie Phillips is the new female firefighter introduced in the latest feature-length special "Heroes of the Storm". It was interspersed with scenes of children learning about fire safety with Gary Lewis, the actor playing Fireman Sam in the stage show. Charlie Jones is a fisherman, Bronwyn's husband, Fireman Sam's brother and father of Sarah and James.

In Series 11, Mandy Flood gave her model of Wallaby 1 to the young prince during his royal visit to Pontypandy with his parents. Bella appears to be based on the real Welsh Italians who ran cafés known as "Bracchis" in South Wales Valleys.

In October 2017, the London Fire Commissioner Dany Cotton highlighted Fireman Sam in a campaign fighting sexism and promoting the gender-neutral term firefighter. Tom had his own theme in Series 5 whenever he takes off in Wallaby 1, however ever since Series 6, it has been absent.

Cloud Scraper is a hot air balloon created by Joe Sparkes, it appeared in the Series 9 episode "Up, Up and Away". Fireman Sam is the brave archetypal fireman and protector, who remains composed in an emergency and unfailingly offers assistance to all those in need.Her ideas are often unconventional and at odds with her male colleagues, but she usually turns out to have been right. Finally, in the last station, there are 4 vehicle bays (one for Jupiter, one for Venus, one for Phoenix and a large one for Mercury and Hydrus). As a former army officer, he insists upon a high standard of both hygiene and efficiency in the fire station. Moose Roberts is a famous mountain climber who hails from Canada and works at the Mountain Activity Centre.