So if households use on average 145lts per day but the leakage rate is running at 110 ltrs per day surely that tells even a five year old that one needs to address the problem now, not some puddly 15% over 10 years. Yes it is probably lead pipes in our100 year old houses that are the main cause but that is not an excuse. Yes Thames water is in a bigger lose with leaks but don't bail them out with our water, get them also to stop the leaks. How do you address the leaks, looking at drip usage, ? it would better if new pipes were laid, yes it costs, but we the consumer end up paying anyway.