My Lords, surely there is no more important issue in relation to this banking situation than whether to go with ring-fencing or with separation—we have had that very clearly debated today. The noble Baroness, Lady Cohen of Pimlico, raised an issue in relation to that, which my
noble friend the Minister placed some emphasis on in responding earlier, as he did at the last stage of this debate—namely, to state that the cost of total separation would be exorbitant. The noble Baroness rightly made the riposte that the cost of policing the ring-fence will not be a one-off, as the cost of a separation would be; the cost will be year after year. The task of the regulators in policing a ring-fencing arrangement will be intensely difficult. It is easy to jibe at the regulators, but we may underestimate the extreme difficulty of doing a thorough job in this field, where you have a single holding company and two companies under it. I take the point made vividly by the noble Lord, Lord Lawson of Blaby, about cultural contamination that can easily infect a group, such as the one that the ring-fenced company will be part of.
I hope that my noble friend will feel able to accept Amendment 5. We are all speculating madly. To have a review of how this has gone, and to look at it coolly, objectively and professionally in the period prescribed, must make absolute sense. Frankly, it is not worth taking the risk of not having such a review. The cost of getting this wrong will be insupportable. We are apt to underestimate, in what has happened over the past five years, the cost to this country in all sorts of non-financial ways. We must not let it happen again. The review that Amendment 5 proposes must be prudent, sensible and ultimately economical.