Mr. John Spain:

It is a challenge to get that balance. We do not have it right at present, particularly for strategic development zones. In terms of the ten-year time period for development plans, the real advantage is that allows sufficient time to provide for housing supply. If you have only a six-year plan, you have only got six years' worth of core strategy housing delivery targets, and they are treated as maximums. You have only six years' worth of planned supply and housing takes far longer than six years from zoning a plan to delivery of completed units, particularly with the delays in the planning system we have all been talking about, that is, if you have only six years' housing supply and you have a six-year housing target, you will not meet that target because you do not have enough flexibility in the land supply that you have. If you are to have ten-years, that allows ten-year housing supply of land.