Looks like it's a 3/4 inch, it's one of three and it's one of the bigger ones. The actual tap/cock says 'shut' on it. I've done this and run the bath taps/flushed the toilet a couple of times but the water supply remains the same. Unless it takes ages to empty the tank, it may be for something...
I'm rubbish! Damsel in distress, attempting to fix things on my tod...
Found two valves in the airing cupboard, a red tap attached to the hot water tank which is obviously for the hot water (worked that one out on ym own :O)) and another which is attached to a pipe behind the water tank which...
I\\\'m just about to change the lever and ball cock in my toilet cistern and I need to turn off the water supply to the cistern. Will there be a valve or stop cock I need to turn off and if so, where am I likely to find this?!