On a point of order, Mr Deputy Speaker. A unique procedure was followed very recently in this House when the people at the head of the security services gave evidence to a Select Committee. Unfortunately, this was not the elevating experience that it might have been; it was one that was probably demeaning to this House. There are reports that the questions were notified to the witnesses and that they were carefully manicured questions, and there were even allegations of the answers being rehearsed. That is not in the spirit of scrutiny that this House has followed for years. We now hear reports that the same heads of security are not willing to give evidence, or have possibly been advised by Ministers not to do so, to another Select Committee—the Home Affairs Committee —where there would be proper scrutiny without pre-publication of the questions. Is this not a matter for you, as Deputy Speaker, to investigate?