During filming we managed to get all of the shots in our list filmed within around one and a half hours, as we had some spare time left in which we could use our locations as well as the camera and actors, we shot a couple of extra clips (such as the one of the interrogator walking up the stairs) impromptu so that we had a few more options during editing.
Unfortunately, we had to re-shoot some clips as we had issues with things such as the actors laughing or people walking into shot. Although this lengthened both the filming and editing processes it allowed us to refine the shots somewhat, tweaking things such as how an actor walks etc.