Would you believe it, we have Mining Bees! I have to admit, I had never heard of them!
We first noticed them a couple of days ago, there were loads of them swarming around our front hedge, then we noticed the little holes inbetween the cracks of our garden path.
I originally thought they were wasps so got straight on to the local pest control. He advised me that they were in fact Mining Bees, that they were not aggresive and would dissapear in about 4-5 weeks.
Phew! Now I know that they won't attack me, i say any bee is welcome in my garden!