 A common style of both ranges is an increase in emotional content, the exploration of ongoing themes and, in the case of "The Tomorrow People", long-running story arcs.As well as writing individual stories for both these ranges, he has contributed to the company’s Doctor Who range in February 2007 with "The Blue Tooth", and later "The Catalyst" and "Empathy Games", both starring Louise Jameson.In 2007, he contributed to the short-story collection "".