I wish to reinforce the point made by my right hon. Friend the Member for East Edinburgh (Mr. Pethick-Lawrence) in view of the right hon. Gentleman's explanation to my hon. Friend the Member for North Aberdeen (Mr. Garro Jones). I cannot follow why a local authority could not be instructed, when placing a contract, to intimate by a notice on the contract itself that it was a contract on which grants would be payable under the Air-Raid Precaution or Civil Defence Measures and that therefore any profits on it must be included in the return to the Minister. I suggest that the right hon. Gentleman is steadily building up our case so completely that at last he will convince himself.