The focal point of the week for me and my friends. Bored with Captain Pugwash, we wanted some real drama and Gary delivered. A testament to the impact of this series is that not only do I remember it, more than half a century later I also recall how I took over the family's Saturday routine to ensure I watched it. In 2015 I can still whistle the theme tune. Stellar television. This series represented the first real quality drama written for children and broadcast nationally. Whilst its replacement in Dr Who has developed to cover a generation of televisión, I would compare it to perhaps 'Blakes Seven' in the audience gap it filled.