Simply - can you manage these Pertwee 7-parters in one sitting? Have you ever sat down and watched Ambassadors of Death from the very beginning to the absolute end? Or do you have to break it up?

When I was a bit younger, I could have happily watched one of these stories in a marathon session. Take a story like And The Silurians, which was so exciting I can just picture myself back in the 1990's wrenching the first VHS out and ramming the second one in to carry on with the story right away.

These days though, it would seem a bit of a chore. I'd love to think I could still do it, but I don't know if I've still got the stamina!

What's the longest you could get through in one viewing?