OHH !! UPDATE !!!! Apparently there WAS a mistake in our bill. What that mistake actually was we can't get to the bottom of, but miracle of miracles, our water bill has been more than halved......um, strange that. The figure is now a far more realistic £280. oh, and by the way, the garden looked fantastic last week - very green beautiful grass, huge vibrant Cannas, roses and jasmine running amuck.....worth every lire !