Counter-Terrorism and Security Bill

I am listening sympathetically to some of the strong arguments that the shadow Minister is making, but I am trying to work out whether this is a principled position or an expedient one. Is he saying that in future cases and debates he and the Labour party, which has introduced a lot of draconian legislation, will adopt the principled presumption in favour of judicial oversight of the accretion of Executive power, or is this just a tactical one-off? Can he give me some reassurance on that point?