asked the Secretary of State for War whether an anti-aircraft brigade for the defence of London is to be formed in the Territorial Army; if so, what is to be the strength of the force and what will it cost; whether the War Office have any figures to show how large an anti-aircraft force would actually be required to defend London from attack by an air force as large as that of France; and whether the decision can be reconsidered, with a view to devoting the money to aircraft in lieu of ground defence?