Hello everyone. I've just noticed a noise from my water pipe. It sounds like water is flowing through the pipe, yet there are no taps in use etc. It is loudest under the sink. I have an outside loo which is close by but isn't making any noise. There is no evidence of leaks anywhere in the house or overflow (I ain't been into the lost though) I'm going to turn off the stopcock tonight just in case. I'm guessing the beast from the east has left me a little gift? Does anyone have any suggestions as to what it may be and/or I go about investigating further before calling my plumber? Thanks in advance.