The hon. Gentleman has raised this matter in the past. On many days, all admission orders are issued. The time until 3 pm is allowed for those visitors whose arrival has been delayed. At 3 pm, any unoccupied seats are allocated to people waiting in the public queue. That is the general system. It has worked to most people's satisfaction, but if the hon. Gentleman thinks that it should be looked at, I shall see what can be done.