Evolution of Spooks.

[HellsBells]

I must admit that I only watched the first series of 24, and didn't like it, other than showing it in real time, I found it quite boring. I didn't think 24 was as well written as Spooks.
I don't think Andrew Woodhead would have been influenced by 24, I think it was more a move towards high-action because you can't just watch people sat at their desks gathering information for 9 series! It had to evolve, to continue for so long, and that would seem the obvious direction to take it.