The show's format, which varied little over the decades, involved an actor reading from famous children's novels or folk tales while seated in an armchair, although later episodes took the radical step of allowing the presenters to stand up. From time to time the scene being read would be illustrated by a specially-commissioned still drawing, often by Quentin Blake. Usually a single book would occupy five daily fifteen-minute episodes, from Monday to Friday. A few Jackanory stories took the form of a play rather than stories being read, in a series of thirty minute fully-cast and costumed dramas entitled Jackanory Playhouse. These included a dramatisation by Philip Glassborow of the comical A. A. Milne story, "The Princess Who Couldn't Laugh."
The readings of Muddle Earth were heavily accompanied by animation and featured actors speaking lines (all animated characters were voiced by John Sessions), leading to criticism that the spirit of the original programme, a single voice telling a tale with minimal distractions, had been lost. The Magician of Samarkand was a similar production, without additional actors speaking lines; Sir Ben Kingsley read the lines of all the characters. Both of these stories were produced and directed by Nick Willing Rather than a series of books taking a particular time slot consecutively for a number of weeks in the year, it is envisaged that new readings will be dropped into the schedule as specials at irregular intervals.
CBeebies is running a weekly series of Jackanory Junior shows.