Council Tax (New Valuation Lists for England) Bill

My hon. Friend pre-empts something of what I thought I might explore myself. I have a similar reference, which I may cite should I catch your eye, Madam Deputy Speaker. Has he any feel for the relative costs of the national structure—buildings, staff and so on—on the one hand, which would be required by a national valuation approach, as opposed to a more transient, small, mobile force that could move around the country, on a local or regional basis, as he described? We might be able to tempt the House to vote for the amendment of our hon. Friend the Member for Mole Valley (Sir Paul Beresford) if we could demonstrate that benefit.