Counter-Terrorism Bill (Programme) (No. 2)

The hon. Gentleman mentioned public immunity certificates in his response to the intervention of the hon. Member for Islington, North (Jeremy Corbyn), but am I right in saying that rule 17 of the coroners' rules 1984 enable a coroner to direct that the public can be excluded from an inquest or any part of an inquest if he considers that it will be in the interests of national security to do so? If that is the case, what we are debating as part of the Bill is completely unnecessary and totally over the top.