Lord Callanan:

Moved by Lord Callanan

15: Clause 1, page 1, line 7, at end insert “, but sections 2 to 4 of this Act do not come into force until the duties outlined in section (Chagos marine protected area) have been discharged.”Member’s explanatory statementThis Amendment would prevent the provisions from coming into force until the Government has published its plan to ensure the long term protection of the Chagos Marine Protected Area.

My Lords, in moving my Amendment 15 I will speak also to Amendments 16, 66 and 73, which are also in my name in this group.

The treaty is clear that Mauritius shall have the duty to conserve and protect the environment, in particular in respect of the marine protected area. It also commits the UK to provide support and assistance to Mauritius in the establishment and management of its marine protected area in the Chagos Archipelago.

The protection of the environment in the Chagos Archipelago is a real concern to many who care about the future of the islands, especially the Chagossians themselves. It is right that the treaty includes protections for the environment, especially for marine wildlife around the islands, but we still need clarity from the Government. For example, the Minister told the House at Second Reading that fishing rights would be limited to traditional sustainable fishing connected with any resettlement of the islands. Could she tell the Committee how the UK Government would hold Mauritius to account if it breached that commitment, bearing in mind that it does not have any way whatever of enforcing those requirements? It has no fishery protection vessels that can reach the Chagos Islands, and not a single one of the aircraft it has can reach the islands, either.

The transfer of sovereignty must not lead to a reduction in environmental protections, so can the Minister confirm whether the Foreign Office has assessed the possible impact of transferred sovereignty on those protections?

Finally, what levers exist through the joint commission to ensure that the environment on and around the islands is protected? Would Parliament be notified if the Mauritian Government were to breach the environmental provisions of the treaty? It is not just the Chagossians but many ecologists and environmentalists who will have concerns about these protections. The Minister should answer those concerns before we proceed to Report.

My Lords, I will speak to Amendments 60, 65 and 68 on the protection and preservation of native and migratory bird species, protection against illegal fishing and, generally, marine conservation. Chagossians support these amendments and want to see His Majesty’s Government implementing them.

First, I will deal with the protection and preservation of native and migratory bird species. Amendment 60 not only represents an environmental concern but a kind of power that, as the indigenous people of the Chagos Islands, they wish to be able to exercise themselves. It sets out the kind of responsible stewardship they want to provide to their own homeland, but the Bill, in Clauses 2 to 4, extinguishes their right to self-government in the islands from which they were forcibly removed by a Labour Government.

The Chagos Archipelago is one of the most important sea bird sanctuaries on earth. It supports some of the largest and least disturbed tropical sea bird colonies remaining anywhere in the world. Scientific surveys by the British Indian Ocean Territory, the Zoological Society and the Chagos Conservation Trust confirm that it holds globally significant populations of species that are in decline elsewhere.

I could go through and name a number of the breeds that are very rare: red-footed boobies breed in very large numbers and tens of thousands of brown noddies, white terns, sooty terns and wedge-tailed shearwaters are nesting successfully nesting on the uninhabited islands that remain free of invasive predators.

Sea birds are not simply wildlife; they are the ecological engine of the entire archipelago. Guano from the large sea bird colonies enriches coastal waters, increasing nitrogen and phosphorus levels that in turn fuel reef productivity. Peer-reviewed research published in Nature shows that reef fish biomass adjacent to healthy seabird colonies can be up to five times higher than the reefs where seabirds have been lost. Protecting seabirds is therefore central to protecting the coral reefs, the lagoon ecosystems and the wider marine food web.

These are not hypothetical risks; they are documented threats to the species of global conservation concern, coming from rats, which can wipe out entire colonies. Light pollution disorientates fledglings. Human disturbance can cause nesting failure. There is a whole range of things. The amendment seeks to create a clear duty to safeguard this irreplaceable natural heritage. It is the kind of environmental care and responsible stewardship that the Chagossians themselves wish to bring to their homeland if they are allowed back and to have self-determination. If this Bill passes in its current form, we will transfer the Chagos Islands to the Republic of Mauritius, a country that is 1,337 miles away and does not even have the capacity, as I said earlier, to reach the islands without assistance from India. We will deny the Chagossian people the opportunity to govern these vital ecological assets. That shows what is at stake. The Chagossian people are asking what needs to be done and what they will lose if we proceed with Clauses 2 to 4. We should not be denying them this as far as the amendment on birds is concerned.

Amendment 65 seeks to introduce a waste management and coastal protection system for the Chagos archipelago. Again, I am sure that noble Lords will agree with this because the ecological consequences are serious and well documented—the risk of ghost nets ensnaring endangered green and hawksbill turtles as well as red-footed boobies, which I have already mentioned, brown noddies and reef sharks. When these nets become caught on the reef crest, they break the coral colonies and accelerate degradation.

It is a most significant protected marine area, covering more than 640,000 square kilometres, including a very large share of the remaining high-quality coral reefs in the Indian Ocean. Seabird-driven nutrient cycles, which sustain high fish biomass on adjacent reefs, are disrupted when plastics and fishing gear interfere with nesting colonies. The Chagossian people know this better than anyone. They have told us that keeping their coastline clean is a matter of identity, stewardship and duty. They want to remove the waste that arrives from other nations and prevent further debris entering their waters. That is an essential part, to them, of caring for their homeland. This amendment is not merely about waste but about justice. It is about whether this House, currently denying the Chagossian people any act of self-determination, will also deny them the ability to protect the beaches, reefs and nesting grounds of their homeland. I hope that this amendment will be supported by noble Lords.

Amendment 68 concerns protection against illegal fishing. It would require the Secretary of State to establish a system of patrols and monitoring to prevent illegal fishing within Chagos territorial waters and the surrounding marine protected areas. It would require the Secretary of State to establish a clear system of patrols and monitoring within the Chagos territorial waters and the surrounding marine protected areas. It is exactly what the Chagossian community have said they would want to do for themselves if Clauses 2 to 4 of this Bill were not going through and the United Kingdom was relinquishing sovereignty. The evidence of illegal fishing in these waters is real and well documented. The Chagos marine protected area spans more than 640,000 square kilometres, an area the size of France. It is formally designated as a fully no-take zone, yet its remoteness has made it a target for illegal, unreported and unregulated fishing. Satellite monitoring, vessel tracking systems and analysis by global monitoring groups such as Global Fishing Watch have on multiple occasions detected foreign longliners operating close to, and in some instances within, the BIOT waters.

Enforcement records maintained by the British Indian Ocean Territory Administration confirm that vessels have been intercepted while illegally targeting tuna, sharks and other species. Past patrols have confiscated shark fins, prohibited gear and long lines, providing clear physical evidence of illegal extraction.

The ecological consequences are profound. Illegal fishing undermines the conservation objectives of one of the world’s most important marine protected areas. Every scientific assessment of Chagos ecosystems concludes that maintaining strong enforcement is essential to preserve its uniquely intact reefs, fish biomass and biodiversity.

There are still many people in the Chagossian community who, from their history and heritage, understand this intimately. They have said that protecting the fish stocks is as important to them as protecting their beaches and nesting sites. They want to be able to participate in patrols to support monitoring and to take responsibility for safeguarding the marine life that their parents and grandparents depended on. They see illegal fishing as a threat not only to biodiversity but to their future ability to sustain themselves when they go back to their islands.

Also, under the United Nations Convention on the Law of the Sea—we have been discussing the advice that it gave—Article 61 requires coastal states to conserve living resources. Article 62 obliges them to ensure proper management and enforcement. Article 73 grants the authority and responsibility to board, inspect, arrest and detain vessels engaged in illegal fishing. The International Tribunal for the Law of the Sea has confirmed that these articles require states to maintain monitoring, to regulate and, crucially, to enforce. At present, there is no statutory duty in domestic law requiring the UK to maintain patrols or monitoring in the BIOT. This amendment would fill that gap and bring legislation into proper alignment with other international obligations, which noble Lords are very keen always to comply with.

The Government may argue that Mauritius can meet these responsibilities after transfer, but the United Kingdom remains the coastal and administrating power today and its treaty obligations exist today. They cannot be satisfied by assuming that another state will meet them.

These are very sensible amendments which, if passed, would at least give the Chagossians the feeling that the United Kingdom cared about the islands overall, about the fishing, the bird life and about the marine life generally. I hope that noble Lords, when they look carefully at this, will actually agree to these amendments. If not, we will bring them back on Report.

I had not intended to speak on these amendments because there are other far more qualified people who I thought would do so. I served on your Lordships’ Environment and Climate Change Committee when it produced the report in July 2023 on the biodiversity agreement in Montreal. As I recall, that commitment, the Montreal treaty, requires Britain to protect 30% of its marine areas by 2030; it was called the 30 by 30 agreement. We were very proud, and I think it was mentioned in that report, that the largest single area of sea that was being protected was the British Indian Ocean Territory’s sea. We accepted tacitly that it was Britain’s responsibility to protect that, that it was a very important area of biodiversity for the world as a whole, and that it was our responsibility.

It now seems that we have handed that over to Mauritius, but Mauritius has no means of policing that area. It has no boats or aeroplanes that could cover that distance and that area. I doubt whether we had permanent boats stationed there, but if there were problems we could. We have the capacity to send both sea- and airborne reconnaissance aircraft to make sure that things are being properly respected.

I wonder, therefore, whether this treaty which we are now legislating to implement is not in contravention of our commitments under the Montreal biodiversity treaty. Are we abandoning commitments we made there and leaving them, in effect, unpoliced?

Another treaty was passed which we did not investigate and which was investigated by another committee of this House. I cannot even remember the name of the treaty but it was about areas of the sea which are outside national jurisdiction. It would seem that this now covers the BIOT—or does it? I hope the Minister will tell us which of these two treaties it is covered by. Is it covered by the old one, which we had responsibility for but have now given up, despite our international obligations under international law, which are normally sacrosanct, or is it under another treaty, which means that it is now dealt with as if it is beyond national jurisdiction?

These are clearly very important matters. It is a shame that we are discussing them at this time of night when people far better informed than I, who could bring their expertise and knowledge to bear, are not here. Since they are not here, I am raising these questions and hope that the Minister will be able to respond to them.

My Lords, I am happy to respond. As I understand it, details about the Mauritian marine protected area were published only last week, or it may have been the week before. There will be a new treaty which will be lodged at the UN in a similar way to ours. It will not be a BBNJ issue. I think we will be considering it in this House next week, when we can get into it in a little more detail now that the noble Lord is back into these issues after a bit of a break. Because this would not be biodiversity beyond national jurisdiction, it would be the responsibility of the Mauritians and covered by the new treaty. I can talk about that a bit more now.

Amendments 15 and 66 would prevent Clauses 2 to 4 coming into force until the UK Government had published a report on how it intended to preserve the Chagos Marine Protected Area. The MPA will be for the Mauritian Government to implement. They have already announced the creation of the MPA, which they will create once the treaty enters into force. No commercial fishing whatever will be allowed in any part of the marine protected area. Low levels of artisanal subsistence fishing for resettled Chagossians will be allowed in certain limited areas and will be compatible with nature conservation. The UK will continue to support Mauritius in the establishment of this marine protected area and in protecting the globally significant ecosystems of the Chagos Archipelago.

On Amendments 38 and 65, while I appreciate and understand the noble Baroness’s commitment to sustaining the unique and pristine environment around the archipelago, recycling and waste management systems on the outer islands would be for Mauritius to deliver. On Diego Garcia itself, waste management is currently undertaken by the US and monitored by the UK to ensure compliance with environmental standards. This will continue following the entry into force of the agreement, with no identified need to change current processes.

On Amendment 60, while Mauritius will be responsible for the environment throughout the Chagos Archipelago, the UK will continue to provide support to protect migratory bird species. Within the agreement, under the international organisations’ exchange of letters, the UK and Mauritius will, for instance, agree separate arrangements to maintain the listed Ramsar wetlands site on Diego Garcia, which provides a unique protected habitat for migratory birds. Further protections will be a matter for Mauritius.

On Amendments 16 and 68, Mauritius will be responsible for the environment throughout the Chagos Archipelago, including enforcement. On 3 November, the Mauritian Government announced the creation of the Chagos Archipelago Marine Protected Area. They have confirmed already that no commercial fishing will be allowed in any part of the MPA. They will, however, allow low levels of artisanal subsistence fishing for resettled Chagossians in certain limited areas, which will be compatible with nature conservation.

The UK has agreed to co-operate with Mauritius on maritime security and provide assistance in the establishment and management of the MPA as part of the Diego Garcia treaty. The terms of this co-operation and assistance will be agreed in a separate process that is already under way.

Amendment 73 is completely unnecessary. We have been clear on this. The UK has not and will not make any financial payment to the Mauritian Government to establish a new MPA in the waters surrounding the Chagos Archipelago. The UK has agreed to provide support and assistance in the establishment and management of the MPA as part of the Diego Garcia treaty, protecting the vital military base on Diego Garcia, and the terms of this support and assistance will be agreed in a separate process that is already under way.

Amendment 76 is no longer required. On 3 November, Mauritius, as I have said, announced the creation of its MPA once the treaty enters into force. Similarly, the points about artisanal fishing apply to that amendment as well. With that, I hope that the amendment can be withdrawn.

My Lords, I thank the Minister for her answers, but I think the debate reflects the complexity of the environmental provisions. As my noble friend said, it is a shame that we could not have had it at a more reasonable time, when there could have been more participants in the debate, but the Government clearly do not wish to do that.

This is not a niche issue: protecting the unique and biodiverse environment on and around the islands is of international significance. The Chagossians, the scientific community and many others want to see the Chagos Islands’ unique ecosystem protected, and it would be an abrogation of the Government’s responsibilities if they were to press ahead with this deal without first securing the appropriate assurances from Mauritius.

I am obviously delighted that Mauritius has announced the marine protected area—I am sure we are all really pleased to see that—but I think the key point was the one raised by my noble friend, which is the matter of enforcement. Mauritius is a small island, it has very few resources and it is thousands of miles away from the Chagos Islands. The waters surrounding the Chagos are rich in fishing and biodiversity and I am sure that, in a few years’ time, we will probably see them being exploited, not for any lack of willingness on the part of the Mauritians but simply because they are completely unable to enforce the provisions. That would be a shame for one of the most unique environments in the world. In the meantime, I beg leave to withdraw my Amendment.

Amendment 15 withdrawn.

Amendment 16 not moved.

House resumed.

House adjourned at 11.22 pm.