The above link is aimed at cyclists really, but I have a real bee in my bonnet about potholes.....
If you find a dangerous pothole, and have already tried phoneing it in to your Local Authority, and nothing has happened, (or simply cannot be bothered trying to find out who to phone it in to), fill in a Hole Report at the above link.
CTC (the national cycling charity) will ensure it gets done!
I reported one really dangerous one in, and it was done in 3 days!!!