the Rank Organisation presents ; Michael Relph and Basil Dearden's production ; original screenplay by Janet Green ; additional dialogue by Lukas Heller ; produced by Michael Relph ; directed by Basil Dearden
created by Anthony Horowitz ; written by Anthony Horowitz and David Kane ; produced by Jeremy Gwilt ; directed by Stuart Orme and Andy Hay ; Eleventh Hour Films in association with Acorn Media Group, Inc. and Octagon Films Limited