Graham -- over here they just fill the pothole with a shovel full of tarmac - usually when it's wet so it comes straight out. If it happens to be dry, then it forms a bump(cause they never roll it) - After a couple of years, our local road has more bumps and holes than original road -- I call it our suspension test track!!!!!
Thats exactly how they fill potholes here as well, good to hear its the same everywhere.
