David CarlingStation Officer Steele / Trevor / Tom / Mike (voice) (92 ep.) David CarlingStation Officer Steele / Chief Fire Officer Boyce / Trevor / Tom / Mike (voice) (76 ep.) Su DouglasDilys / Mandy / Helen / Lily (voice) (76 ep.) Tegwen TuckerPenny / Sarah / Bronwyn / Mrs. Chen (voice) (76 ep.) Steven KynmanSam / Elvis / Norman / Derek / Charlie (voice) (51 ep.) Steven KynmanSam / Elvis / Norman / James / Derek / Charlie (voice) (51 ep.) 
Jo WyattHannah / Lizzie (voice) (50 ep.) Steven KynmanSam / Elvis / Norman / James / Charlie (voice) (41 ep.) Steven KynmanSam / Elvis / Norman / Derek / Charlie / Jerry Lee (voice) (25 ep.)
Ifan Huw DafyddGareth (voice) (76 ep.)
Nigel WhitmeyMoose (voice) (76 ep.)
Alex LoweBen / Joe (voice) (50 ep.)
John SparkesMale Voices (voice) (26 ep.)
Sarah HadlandFemale Voices (voice) (26 ep.)