I have been involved in resolving meter disputes for many years. The majority of disputes i have to deal with could easily have been defused with in the first instance by good communication and training of the call centre advisors, alas it seems this will never happen partly due to a high turn over of staff. Another problem is the sheer volume of transient customers any given utility company is handling on a monthly basis, meter faults as yet undiscovered are inevitably inherited, any future resolution can then involve multiple suppliers arguing over responsibility but this is moving away from the central issue. In my experience the vast majority of meters are operating well within their parameters so be assured that your meter is serving you faithfully not as some of the scaremongering i have read here would have you believe. The old style mechanical meters relatively speaking were and are the most reliable type of meter, they have upto a 29 year recertification life compared to the 9 year life span of the cheap mass produced digital meters. If you suspect your meter is recording incorrectly there are a few things you can do yourself before involving the supplier (1) take readings off your meter every 24 hours, the average usage is very approximately 14 units, (100 units = 1kw) Often a faulty appliance is a villian of the peace and it is a process of elimination tracking it down. A mechanical meter has a flywheel which gives you a visual indication of your current usage, (the pulsing red light on a digital meter is the equivalant guide) switch a kettle on and you will be able to see your meter reacting to it, if your meter is flashing away and you are not aware of anything that could be causing it then start tripping off the switches on your fuse box one at a time until one of them causes your meter to calm down and providing your fuse box is labeled up properly you have now isolated the usage to a specific area such as kitchen ring main (plug sockets) A hint here, i often find emersion heaters looking guilty, DONT leave them running 24/7 unlike large inefficient boilers of old where the advice was exactly this. If you have been leaving it permanantly on check the temp of your water, if it is scalding hot then your thermastat may have burnt ould resulting in your emersion constantly heating the water and costing you the equivelent of a small country's gdp. SWITCH IT OFF REGARDLESS, it only needs to be on 30 mins before you need it. With the advent of smart meters, optimistically all these issues should disappear over night and there is equivelent kit available such as onzo from SSE which clamps onto your existing meter and mimics a smart meter, it is freely available and will inform you of your usage in pounds and pence instead of a KW counter. Hope this was useful.