"Gaz" wrote:

I may be wrong but as that program was a repeat perhaps all the
data/images hadn't been released in time for the program makers to use
them?

I'm sure I watched that episode quite a while ago.

You can be forgiven for having Deja vu moments, as although this episode
has not been broadcast before, it was made by recycling material from
3 earlier Horizons episodes, and a sprinking of new material.