I have just acquired the above-addressed house.  Previous owner left water-services within the property in a bad way.  Specifically no one can find a mains tap within the bounds of the property.  To facilitate various repairs to domestic (water-using) appliances my plumber investigated the mains cock in the street outside the house and reports that your service is "in a very bad shape" and doesn't either shut down or open fully.  The house has a solar-energy system that relies on having various apparatus maintained with full flow of water. Can you please inspect your mains offtake-point and remedy any fault?  Thank you very much.