John T Koch was on the programme & briefly explained his Celts & the Atlantic trade routes theory.
An interesting programme, but as ever, more detail would have improved it. However, I'm aware that producers have to consider the greater audience.
Thanks for the heads up.
Huw Edwards is a good presenter but as you said this programme is aimed at a general audience and there wasn't enough coverage of the Neolithic in this episode.
I must admit I need to read more of Koch and Cunliffe because I like the idea of "Celts from the West." It feels right to me.