I am currently going through the trauma of a)finding and b) repairing a leak in the water main. The Water Board very kindly have sent an old twat with a hearing trumpet round to listen for the leak. He pointed to an area - under my very expensive patio natch - and said that there was probably a leak there. Oh and I had five days to get it sorted... Well two days of digging and searching in the general area and we still haven't found the ******* leak. Surely there must be technology more accurate than a grumpy old bloke in a yellow hi-vis coat, wielding a length of dowelling on a thread bobbin and claiming there may be a leak in the generic area known as "under there"?