I thank Hefin David for that. He's right, of course: we want a balanced and proportional approach. But, the way you get balance and proportionality here is by having a single rulebook that you then apply differentially in the different circumstances of different types and natures of farms. That is what the Welsh Government has been working on, and when we're ready to publish the regulations, that is what the Member will see. But it is not one rule fits everybody. It is a single and common set of rules, but the way that you apply them will be proportionate and balanced, and will reflect the needs and circumstances of particular farms and the extent to which they make a contribution to the very real problem of agricultural pollution.