Just received my bill for billing period 19 Aug to 19 Oct and I have used 1011 units. I always have a sneaking suspicion that we are 'leaking' electricity and wonder if this about average for a family of 4 living in detached house using electricity to heat the water and cooking by electricity. I leave immersion on to sink all the time. Is there any government agency I can contact for advice (or any other body)?