television series endings 1950s British children's television series 1970s British children's television series 2000s British children's television series BBC children's television shows Television series by BBC Studios Television series by Cosgrove Hall Films British children's animated television shows British preschool education television series British stop-motion animated television series British television shows featuring puppetry 1950s preschool education television series 1960s preschool education television series 1970s preschool education television series English-language television shows CBeebies British television series revived after cancellation