yes, it is the run off of water from his garage roof and shed, as it was ok before. this seems like malicious intent
no, not yet, may be that is the first task, as i think uk building regs stipulate a soak away underground
ok thanks for your help
helped a little, pointed me in the right direction.
Local building control didnt want to know, it was out of their jurisdiction, and suggested to contact the local invironmental agency (garden law). I am currently under discussions with a surveyor / conveyance partnership, prior to approaching my solicitor.