Invisible Worlds was an exceptionally demanding high-profile production. With ambition outstripping its budget, and an ever changing post schedule, I began to fear Halo would rue the day we came knocking. But somehow they rose above it all, with grace, professionalism and sheer creative flair. They're in large measure responsible for the gloss of the shows and I would relish the chance of working with John and the team again.
Simon Finch, Producer, Invisible Worlds, BBC1
