On a point of order, Mr Speaker. This is something that has been troubling me for a few weeks now. When I first came here, I was told that the protocol of the Chamber is that hon. Members must never cross the line of sight between you and whoever is speaking. However, on multiple occasions this Chamber has emptied when my right hon. Friend Ian Blackford has stood up, to the point at which people cut off your line of sight when you are in the middle of speaking to Members. Could you advise us on how that can be corrected?