I am not treating these issues lightly. I am responding to specific suggestions made by the hon. Gentleman. The hon. Gentleman has rightly said that the RSPCA has identified a number of breeds, but it has certainly not identified all the dangerous breeds, and it has not even begun to address the question of cross-breeds or quarter-breeds, because it cannot.
Is the hon. Gentleman considering a one-off licensing system or an annual licensing system? In the nature of things, people's circumstances and conditions change. Would a person who moves house have to apply for a new licence? The hon. Gentleman has himself told us that one important criterion—indeed, the only one that he mentioned—is the ability of an applicant to keep his or her animal securely at night. The ability of a person to do so will clearly depend on the conditions in which he or she is living. When someone moves house, those conditions change, so would a further application be necessary?