Not read any of those, I don't think - but my dad is a big Niven fan so he may well have mentioned the concepts to me at some point.

Primeval is just that, and not the first avenue they tried even there - PJ Hammond was approached about a Sapphire & Steel revival and has only said, discreetly, that he wasn't happy with the direction in which ITV wanted to take it. Presumably a young, sexy Sapphire and Steel, and lots of explosions.