I do want to say that a lot of time was spent on costing in this area, and that is why it's so necessary to undertake the business case so that we can get better modelling around cost. But again, I make the point that this is an area where I anticipate that we will need to invest in for the long term. And I do want to make the point that in the whole reform programme we didn't have a comprehensive data set of information from councils about the health of their water infrastructure network, about a range of data that would be necessary to do a thorough analysis around cost, existing costs, ongoing maintenance requirements, and new costs with a higher regime in place until we undertook this programme some four years ago. 