Fireman Sam

Fireman Sam (Welsh: "Sam Tân") is a British/Canadian animated children's television series about a fireman named Sam and his fellow firefighters who work in the Pontypandy Fire Station, and other residents in a fictional Welsh rural village called Pontypandy (a portmanteau of two real towns, Pontypridd and Tonypandy). The first five series of the show were animated in stop motion, but starting with the sixth series onwards, the show is completely animated in CGI.
Original idea.
The original idea for the series came from two former firemen from London, who took their idea to artist and writer Rob Lee who developed the concept, and the show was commissioned. The series first appeared in Welsh on S4C on 15 September 1987, and two months later in English on BBC One on 17 November.