[written by Alasdair Cullen...[et al.] [written by Alasdair Cullen...[et al. [written by Jeremy Allen...et al.] [written by Val Warke...[et al.]] written by Jeremy Allen...[et al.] written by Saladin Ahmed...[et al. written by Laura Cowan...[et al.] [written by David Taylor...et al.] [written by Jan Astley ...[et al.] [written by Jeremy Allen...et al.