In reply to Chris Craggs:
Nordic mozzies don't do open spaces as well as Scottish midges. In Finland you can camp on a small beach on a lake side, say 6 mtrs of sand and be fine. Walk two metres into the forest beyond for a pee and they are in your eyes, ears, nose etc. Horrible. I think in Norway you are often by a beach and sea so it helps! Go inland into lapland and it can be very midgy.