So.....I rang the water company and told I was on the wrong Tariff.
For the amount of water we use we ought to be on the Low User tariff.
They are allowed to backdate it for one year so our debt will be reduced by nearly£40 [I think thats what she said]
My DD will be put up to £28 [from £25] a month to clear the amount owing.
So its still gone up, but not as much. Time will tell if the low user rate makes that much difference.
Thankyou for your replies. The lady I spoke to assures me there can be nothing wrong with the meter after checking our past usage.
http://tinyurl.com/q3bek6w this is another way to maybe reduce your bills.
We were able to use that system at our last property. It doesn't apply to this one unfortunatly.