"The defendant, his servants or agents were negligent in that they (a) failed to take reasonable care and skill when installing the shower unit and/or the pipes in Flat 3. The shower was placed on a suspended timber floor without adequate waterproofing measures or good quality materials; (b) failed to ensure that water did not escape or continue to escape from Flat 3 into Flat 1; (c) failed adequately to repair the shower unit and/or the pipes in Flat 3 at any time from early 1999 to January 2001 notwithstanding two attempts to apply silicone mastic to the junction of the shower tray and shower wall enclosures to seek to prevent leaks; (d) failed to ensure that the occupiers of Flat 3 ceased using the shower unit and/or wash basin once defendant had been told the same was leaking; (e) failed to dismantle the shower unit forming a substantial base on sound timbers in order to provide a proper secondary waterproofing enclosure; (f) failed to install a system of maintenance and/or any suitable precautions in order to ensure that water did not escape or continue to escape from Flat 3 into Flat 1; (g) expose the property of the claimant to a foreseeable risk of injury."
"I have subsequently spoken to Mr Ansari, the lessee of this flat, who has advised me that he has carried out a lot of work to the bathroom to try and waterproof the shower unit and pipework beneath but has now agreed to get his plumber back to have another look and try to solve this problem once and for all."
"As a result of Razia's [Miss Wahr] call on11 October 1999 I had for a while been chasing Mr Ansari more or less constantly and found that he would try to give me the 'brush-off' without actually doing anything to improve the situation."
"I arranged an appointment to view the flat myself with Mr Ansari on4 January 2001 . Unfortunately when I arrived Mr Ansari was not in attendance but a colleague of his did attend. The gentleman was horrified when I showed him the condition of our client's flat, Flat 1. We immediately went upstairs into Flat 3, lifted the floorboards and found that a lead pipe just below the floorboards in the corridor had been moved to the extent that it touched the floorboard on top of it. This resulted in the pipe fracturing over time as the floorboard was continually trodden on. I concluded that the pipe must have been moved during works to the kitchen within Flat 3. Mr Ansari's colleague immediately carried out the necessary repair to the pipe. In fact, he telephoned me later the following day to confirm that the repair had been completed."
"It seems to me abundantly clear that what happened in both these cases is that there was a leak and that this caused damage which has resulted in loss to the defendant. I have to come on in a moment to look at the legal implications of that. It seems to me that there may well have been contributory factors and other reasons why the place was damp, but I am quite clear on the evidence principally of Mr Darwall-Smith that, but for the events which he describes neither of these leaks would have occurred and the damage would not have resulted."
"The leaks caused damage. They resulted from a failure to repair or maintain, and that obligation is owed to all the other lessees as regards their flats ..... "
"32 The negligence consists of alleged failures by the defendant to take reasonable skill and care when installing the shower unit or the pipes to ensure that the water did not escape or continue to escape; to adequately repair the shower unit and/or the pipes at any time from early 1999 to January 2001; to ensure that the occupiers of Flat 3 ceased using the shower unit and/or wash basin once the defendant had been told that the same was leaking; to dismantle the shower unit; to install a system of maintenance and simple precautions to stop the water coming through and exposing the property of the claimant to a foreseeable risk of injury. It seems to me that other than the last and possibly the first claims, those are all breaches of duty made out on the facts in these voluminous papers and in the evidence which I have summarised. 33 In this case, Mr Ansari or his representative, were on clear notice from an early stage of the problems that had developed, and they were under a duty to respond appropriately to put them right. As I see it, they failed to do that. It seems to me clear beyond doubt that there is a liability upon the defendant in this case."
"47 It seems to me probable that but for the leaks other problems with this somewhat unsatisfactory building would not have caused damage which needed to be repaired. 48 ..... The leaks were the primary factor in the loss. There are undoubtedly problems with this building. However, but for the omissions of the defendant, which I have identified earlier in the judgment, the loss would not have materialised."