Soon as I saw him on the One Show ....

.....I reached for my credit card!  He's on in February at the Brighton Centre. Seems like it's nearly a sell out already.

I have heard him speak before, at a  lecture organised by the Humanists Society, not long after his book "Why does E = mc squared?" came out. The cue for signing was very long, but I waited!   He spoke on the useful scientific spin-offs from the money spent on space investigation.