i have just had my water meter read for the first time since having it installed. The reading was much higher than expected,that of 5 people rather than 2. I was told that i must have a leak within my property. After closing the mains stop cock within my house i noticed the spinner on my meter was still turning. does this mean i have a leak within the pipe from the meter outlet to my stop cock? if so, is this difficult/expensive to repair/replace? bearing in mind the majority of the pipe is under the house itself. how would this repair work be carried out and would my buildings insurance cover its cost? thanks.