A lot’s being written and said on the airwaves this week about how lawyers are supposedly crawling over Sir Fred Goodwin’s exceedingly generous pension from RBS. Well, I’ll leave it to the pensions experts to speculate about whether his pension was discretionary and whether any attempt to stop his money under existing law could succeed. What I’m more interested in is whether the government could open its big clunking fist and grab his wad by legislation. The government doesn’t buy my opinion any more, but Harriet Harman would like what I’m going to say: I think legislation could do the trick.

What I’m suggesting is a Bill that gives the government power to reduce pension payments made after it comes into force pursuant to contracts with banks now majority-owned by government. The power would be exercisable in relation to anyone (not just Sir Fred) who a special expert body thought shared management responsibility for the failures that led to the need for government support, and the amount of the reduction would be in accordance with a formula that would reflect the person’s responsibility. The reductions would also however be for the purpose of saving public money, so bigger amounts would come from the biggest pensions – the expert body would not have to respect the proportionate differentials the contracts created in the first place. The formula would be applied by the expert body, a sort of Financial Crisis Management Contribution Commission, who would be tasked with reducing payments straight away, using a very rough yardstick (say, a 90% reduction in the case of very big pensions) on the basis of initial summary findings, with balancing adjustments and repayments to follow later if the person could show their responsibility was less after full consideration. The body would look at the biggest pension payouts first. The amounts saved would be paid as contributions into a special fund to support the banks, relieving the public purse.

It might be objected that this is in effect “retrospective” legislation: Sir Fred has already had his pension, and now you’re changing things after the fact. Well, I’m not sure this proposal is retrospective (I prefer the term retroactive, actually). It does not try to alter the fact that Sir Fred has his pension; nor does it affect his pension in any way before it comes into force, or try to claw back sums already paid to him. I think people are far too ready to see retroactivity in legislation which is not, properly analysed, retroactive at all. Here, my proposal would in no way change the legal position prior to its coming into force: that is the true test of retroactivity. We don’t call tax increases retrospective when they affect income earned under contracts signed years before; I don’t think my proposal is any more retoactive than that.

In any event, there’s no reason why Parliament can’t legislate retroactively. There’s a legal presumption that legislation isn’t retrospective, but that’s simply a rule of statutory interpretation. A clearly worded Act can get round that.

Nor does the Human Rights Act prevent it. Yes, the article 7 Convention right prevents punishment without law:

No one shall be held guilty of any criminal offence on account of any act or omission which did not constitute a criminal offence under national or international law at the time when it was committed

but obviously this only applies to retroactive criminality: it would not get in the way of my proposal.

Both Tom Winsor and Afua Hirsch have mentioned the right to protection of property under article 1 of Protocol 1: I agree this is the most serious legal obstacle to legislation. But I don’t agree with Tom Winsor that it is insurmountable.

Article 1 of Protocol 1 says

Every natural or legal person is entitled to the peaceful enjoyment of his possessions. No one shall be deprived of his possessions except in the public interest and subject to the conditions provided for by law and by the general principles of international law.

The preceding provisions shall not, however, in any way impair the right of a State to enforce such laws as it deems necessary to control the use of property in accordance with the general interest or to secure the payment of taxes or other contributions or penalties.

The case law shows that any interference with property – and accrued pension rights certainly are property – is only permitted if it strikes a “fair balance” between the public interest and the private rights of the owner, in this case Sir Fred.

In a case involving an absolute deprivation of property, that normally requires compensation. But even cases of outright deprivation don’t always require compensation: it depends on all the circumstances. Here, monetary compensation for the reduction of pension payments makes no sense. Either full compensation is needed (which means the very act of reduction, even by one penny, would be a breach: that seems to me an extreme and self-defeating analysis, since a 1% reduction could hardly be called an outright deprivation) or else partial compensation is sufficient, which is simply another way of saying a lesser, uncompensated reduction is permitted. It makes no sense in this context to talk about the need for compensation, and I doubt the courts would do so.

In any event, this is not a deprivation case. My proposal would not totally extinguish Sir Fred’s pension: it would divert it to other purposes in line with public policy. It would in other words be a control of his property in the general interest – in a case like that, compensation usually isn’t required. You might even argue that my proposal involves securing the payment of contributions, which the courts take an even more relaxed attitude to.

What matters in article 1 Protocol 1 terms is whether the reductions served a proper policy purpose – I think they would since it is clearly legitimate for the state to stop the money it’s had to put up to rescue banks being siphoned off into payments to those whose failures created the crisis – and whether the amount of reduction is fair. By creating a transparent formula involving expert assessment, and giving Sir Fred the right to argue his case fully, to appeal and so on, a system of reductions could be made fair: I think the courts might well uphold it.

Vince Cable may think my idea is “absolutely potty”, but I think Harriet should introduce a Bill now. I even think she could make a section 19(1)(a) statement of compatibility – but if she feels doubtful about my view she can always use section 19(1)(b) and ask the House to take the legal risk. This pension need not stand.