I would add sunset clauses or temporary standing orders that lapse unless they're renewed; all of those kinds of things can provide a safeguard. I'm sure that after the crisis there will be a number of reviews of the different ways and the different aspects of the experience.
I think particularly parliamentary committees like this one will probably play a very crucial role in that and in taking a measured view of what happened and whether there are things that worked better or that wouldn't be appropriate to carry on or that should be preserved for crisis situations. I think that's very appropriate for the role of a parliamentary committee.