[written by Fiona Watt ... et al.] [written by Fiona Watt ... [et al.] written by Fiona Watt ...[et al.] [written by Andrew Bain ... et al.] [written by Michael Allaby ... et al.] written by Jerry Smath ... [et al.] [written by Alex Frith ... [et al.] [written by Andrew Bain ... [et al.] [written by Jan Astley ...[et al.] [written by Val Warke...[et al.]]