Given I grew up in the countryside and learned to drive (read, boy racer in a mini cooper) on the winding roads of the Shires, I couldn't help but have an opinion on the plans to reduce speed limits on rural B roads. I'm going to be blunt. It won't make a blind bit of difference. People will still drive fast on such roads and without a massive extension of speed cameras into areas where they will fail to recoup their own costs it will be completely unenforcebale.
The most effective and safe way to reduce speed on rural B roads is to remove the white line in the middle. It's amazing how well it works. If you remove the conofrt zone of the middle line drivers become much more aware of their speed and position.