Undersea cables: Threats to the UK’s infrastructure

Undersea cables connect countries and continents and form the ‘backbone’ of the global internet. Up to 99% of the world’s telecommunications data runs through such cables, including financial transactions. The UK is reliant on such cables. However, concerns have been raised in recent years that these cables could be targeted by hostile parties, particularly in times of conflict. This briefing explores the threats posed to the UK’s undersea cables and government action to protect them.

Undersea cables: Threats to the UK’s infrastructure

Conflict prevention, mediation and peacebuilding: Role of the UN and UK

This briefing examines the role of the United Nations and the UK in conflict prevention, mediation and peacebuilding. It outlines recent UN reforms to its peacebuilding architecture, assesses the UK’s approach and funding commitments, and considers debates about the effectiveness of international efforts to prevent conflict and sustain peace amid rising global instability and pressure on development budgets.

Conflict prevention, mediation and peacebuilding: Role of the UN and UK

  • In Focus

    UK-EU Agreement in respect of Gibraltar

    The UK and the EU have agreed a treaty that would create a new framework for Gibraltar’s relationship with the EU following the end of the Brexit transition period at the end of 2020. The arrangements are aimed at creating a fluid land border between Gibraltar and Spain. The treaty has been provisionally applied by the parties since 15 July 2026.

  • Research Briefing

    British Sovereignty Protection (Chagos Islands) Bill [HL]: HL Bill 15 of 2026–27

    The British Sovereignty Protection (Chagos Islands) Bill [HL] is a private member’s bill sponsored by Lord Weir of Ballyholme (Democratic Unionist Party). The bill would restrict any cession or transfer of sovereignty of the British Indian Ocean Territory (BIOT) unless certain requirements were met, including the consent of the Chagossian people and an act of parliament. It would also see the UK remain sovereign over the military base on Diego Garcia.

  • In Focus

    UK-Poland defence and security treaty

    The UK and Poland have signed a new treaty on defence and security which provides a framework for cooperation across a range of policy areas, including foreign policy and defence innovation, economic resilience, and energy and climate security. It is not yet in force; the process of its ratification is ongoing. The treaty comes at a time of rising geopolitical tensions, particularly over the war in Ukraine and Russian activity on NATO’s eastern flank.

  • In Focus

    UK-EU competition cooperation agreement

    The UK-EU competition cooperation agreement would establish a formal framework for the UK’s Competition and Markets Authority and EU competition authorities to work together to enforce their respective competition laws. This would include duties for authorities to consider the interests of other parties when enforcing competition law and safeguards regarding the sharing and use of information. The agreement was signed in February 2026 but it is not in force at the time of writing.

  • In Focus

    Health partnerships between the UK and organisations in Africa and Asia

    The UK government and health organisations have established numerous health partnerships with organisations in Africa and Asia to support the development of healthcare in those countries. Independent evaluations conclude that many are effective, although some do not result in sustained changes to the broader health system. Recently, there have been concerns for the future of these programmes following reductions in aid funding and the conclusion of programmes without successor schemes.

  • In Focus

    Forced labour in UK supply chains: Joint Committee on Human Rights report

    In July 2025, the Joint Committee on Human Rights published a report contending that goods which are produced or part-produced with forced labour are being sold to consumers in the UK. It also argued that the UK had fallen behind comparable countries in its approach to tackling forced labour. The committee called for new legislation to address the issue. The government responded that it was “actively exploring options to strengthen protections”.

  • Research Briefing

    Genocide Determination Bill [HL]: HL Bill 13 of 2026–27

    The bill would enable the High Court in England and Wales, the Court of Session in Scotland and the High Court in Northern Ireland, to make preliminary determinations on whether a genocide is occurring overseas, or if there is deemed to be a serious risk of one occurring. The bill would require the government to refer the preliminary determination to international bodies such as the International Court of Justice.

  • In Focus

    Proposed legislation on defence readiness and national resilience

    The 2025 strategic defence review recommended the government bring forward a defence readiness bill to provide for powers to mobilise reserves and industry should crisis escalate into conflict. Amid criticism that such a measure was not included in the May 2026 King’s Speech, the government has indicated it will introduce a bill later in the current parliament. There have been calls for the bill to cover national resilience matters more broadly when it is introduced.

  • In Focus

    Ukraine’s decentralisation reforms

    Even as the war in the country continues, Ukraine has implemented significant reform and decentralisation of its public sector in an attempt to improve effectiveness as well as local and regional participation, accountability, and growth. Observers suggest Ukraine has made notable progress in these areas, but considerable obstacles remain. Addressing these challenges could, they argue, be key to Ukraine’s resilience and post-war recovery.

  • In Focus

    Impact of cuts to official development assistance on women and girls

    The UK has reduced official development assistance (ODA) from 0.7% of gross national income in 2020 to a planned 0.3% by 2027. This briefing examines the government's approach to supporting women and girls within a reduced aid budget, recent changes to ODA allocations, and assessments of the implications for women and girls.

  • Research Briefing

    Armed Forces Bill: HL Bill 36 of 2026–27

    The primary purpose of the Armed Forces Bill is to renew the Armed Forces Act 2006, continuing in force the main legislation governing the armed forces for a further five years. However, the government has stated the bill also provides an opportunity to renew the nation’s contract with the armed forces, strengthen national security, improve conditions of service, and introduce a package of measures relating to the service justice system.

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