[written by Val Warke...[et al.]] written by Sam Baer...[et al.] written by Adam Bray...[et al.] [written by Jan Astley ...[et al.] [written by Richard Walker ...[et al.]]. [written by Fiona Watt ... [et al.] written by Adam Bray ... [et al.] written by Alex Howard...[et al.] [written by Amy Balfour ... [et al.]] [written by Jan Astley [et al.]