That brings up a very good point Gaag, what quality control measures (if any?!) do MFC and the contractors have who installed this...I'm guessing not a fuckin' lot...the whole UGH system should have been inspected, checked, record sheets written, dated and signed off, photographs taken etc etc by both parties to ensure that the system was complete and functioning as it should.
I'm pretty sure if I was paying £250k, or whatever the cost of it was to install, I'd also be making damn sure that I was covered for any defects or faults that occurred through no fault of ours for at least 5, possibly 10 years...the contract should have been drawn up to ensure that MFC were (excuse the pun) water tight.