Why due process is being sidelined by Labour in the rush to force through the Chagos Bill

On Monday, at Third Reading of the Chagos Bill, the House of Lords faces a moment of stark clarity.

Peers are being asked to pass legislation of extraordinary constitutional, financial and strategic consequence while live legal proceedings challenging its lawfulness remain unresolved.

A modest, carefully drafted amendment was proposed to address precisely that problem. It would not have killed the Bill. It would not have overturned the Government’s policy. It would not even have delayed matters indefinitely.

It would simply have ensured that the Act could not be brought into force until the courts had finished doing their job.

That amendment has now been blocked by the Labour Government.

The amendment was straightforward. It dealt solely with commencement. It provided that no provision of the Act giving effect to, or facilitating the ratification or implementation of, the treaty could come into force until all legal proceedings relating to its lawfulness had been finally determined. It required the Secretary of State to confirm to both Houses that those proceedings had concluded before commencement.

In constitutional terms, this was as restrained as it gets.

It respected the separation of powers. It did not tell the courts what to decide. It did not bind Parliament thereafter. It did not reopen the substance of the treaty. It simply ensured that Parliament did not press the button on an irreversible statute while the courts were still deciding whether the Government had acted lawfully.

This is not an abstract concern. There is a live judicial review under way, organised by the Great British PAC and brought on behalf of the Chagossian people, challenging the Government’s handling of the treaty and its implementation. The proceedings are serious, advanced, and awaiting judgment. They are not hypothetical. They are not speculative. They are real.

In those circumstances, the constitutional question is not whether one supports or opposes the treaty in principle. The question is whether it is proper for Parliament to “switch on” legislation of this magnitude before the courts have spoken.

For generations, the answer to that question has been clear. Parliament does not knowingly pre-empt the courts. It does not legislate in a way that risks rendering judicial proceedings academic. And it does not expose itself to the humiliation of having enacted legislation resting on foundations that a court later finds unlawful.

That is precisely what this amendment would have prevented.

The amendment also sat squarely within the accepted purpose of Third Reading. It addressed a specific uncertainty that crystallised late in the Bill’s passage: the existence of live legal proceedings whose outcome bears directly on commencement. It improved clarity. It improved coherence. It ensured that the statute book would operate sensibly and lawfully.

And yet, despite repeated efforts over recent days to meet every procedural requirement, the amendment has been ruled out.

Those seeking to table it were told that Third Reading amendments must clarify uncertainty. They were told that cross-party support would be required. They worked to meet those tests. Cross-party peers were ready to support the amendment. The uncertainty could not be more obvious: whether Parliament should commence an Act before the courts have ruled on its lawfulness.

But it has now become clear that the bar is higher still. The effective test is no longer whether uncertainty exists, but whether the Labour Government is willing to acknowledge that it exists. And since the Labour Government maintains that everything is already certain, no amendment that would slow or constrain commencement can be permitted.

In other words, the rules are only rules until they become inconvenient.

This matters far beyond the technicalities of parliamentary procedure. The Labour Government’s determination to press ahead regardless is not an accident. It is because this amendment would have stopped them in their tracks. It would have required them to wait. It would have forced them to respect the courts. And it would have denied them the ability to rush an irreversible transfer of sovereignty and the commitment of tens of billions of pounds of public money before legal scrutiny had concluded.

Ministers have repeatedly said they are confident in the lawfulness of their approach. If that confidence were genuine, waiting for judgment would pose no difficulty at all. If the courts uphold the Government’s position, the Act could be commenced immediately thereafter, with the authority of both Parliament and the judiciary behind it.

The refusal to wait speaks volumes.

What is being lost here is not merely a procedural safeguard, but the principle that due process matters even when it is inconvenient. The House of Lords has long described itself as a guardian of constitutional propriety. That role is not symbolic. It exists precisely for moments like this, when the executive is determined to move faster than the law.

Soon, those that wanted any amendments will be told that it is too late, that the rules do not allow amendments, that nothing more can be done. They should ask themselves whether that is really true, or whether it is simply what the Labour Government wants them to believe.

This amendment was modest. It was careful. It was constitutionally orthodox. And it would have protected Parliament, the courts, and the integrity of the law.

The fact that it has been blocked is itself the clearest indication of how necessary it is.

If the House of Lords will not insist that the law be allowed to speak before irreversible legislation is brought into force, then one must ask what purpose it serves at all.

Monday is not about policy preference. It is about whether Parliament still believes in due process.

And whether it is prepared to defend it.

By Claire Bullivant

For those asking what, precisely, has been blocked, this was one of the amendments the Labour Government refused to allow. It was modest, constitutionally orthodox, and designed solely to ensure that the law was allowed to take its course. The reason it was stopped is obvious: any peer committed to fairness, legality and due process would have found it impossible to oppose.

Amendment : Commencement subject to conclusion of legal proceedings

After Clause 1, insert the following new clause—

“Commencement subject to conclusion of legal proceedings

(1) Notwithstanding section 1, no provision of this Act which gives effect to, or facilitates the ratification or implementation of, the Treaty may come into force until all legal proceedings relating to the lawfulness of the Treaty or its implementation have been finally determined.

(2) For the purposes of subsection (1), legal proceedings include any judicial review, appeal, or further application arising therefrom, whether brought before a domestic or international court or tribunal.

(3) The Secretary of State must lay before both Houses of Parliament a statement confirming that such proceedings have been finally concluded before bringing any such provision into force.”

Member’s explanatory statement
This amendment seeks to clarify the commencement of the Act in circumstances where legal proceedings relating to the lawfulness of the Treaty remain ongoing.