The leak is coming from what i think is the overflow pipe in the tank of number 9. It is leaking in to the alley between our houses and is making my house wet. The house is currently empty but the landlord lives at number 17. 
This leak was reported before Christmas and a water man came out. He told me the home owner had a week to fix the leak or his water would be turned off. After speaking to the home owner, it appeared that the water man was turning off the water and the leak slowed down but it is still dripping and as far as I am aware the landlord has not done any thing about it. I do not want the landlord to know it was me who has Co planned as we do not get on.