Jake Kanter International TV EditorThe Crown star Helena Bonham Carter is to narrate an animated Channel 4 adaptation of Clown, a kids story written and illustrated by Sir Quentin Blake.Channel 4 has commissioned Eagle Eye Drama, the production company recently launched by the team behind global drama streamer Walter Presents, to make the 30-minute special using hand-drawn animation techniques.Quentin Blake’s Clown will bring to life the adventures of a little toy clown, thrown away with a load