The Clangers' language is spoken in whistles, so it is difficult to say if there is any profanity spoken by them, but the audience would be unaware of this anyway, and the narrator never swears.
Alcohol, Drugs & Smoking
None
None.
Frightening & Intense Scenes
None
Though the Clangers can get themselves into difficult situations, there is nothing frightening or tense in these moments.
Overall, this programme is completely free of anything remotely unsuitable for children.