UK Proposes New Measures to Protect Undersea Infrastructure

The UK government has unveiled a series of proposed measures aimed at enhancing the protection of its critical undersea infrastructure, including cables and pipelines, from potential hostile threats. These proposals, outlined in a White Paper released on October 22, 2026, include imposing tougher penalties for those who damage these vital connections, as well as granting new powers to the government to act in the interest of national security.

Proposed Legal Reforms

The new measures propose significant changes to existing legislation, which currently dates back to the Submarine Telegraph Act of 1885. Under the proposed laws, individuals who intentionally damage undersea cables and pipelines could face prison sentences of up to 14 years and unlimited fines. The proposals also introduce penalties for reckless and grossly negligent conduct, with potential prison terms of 10 years and two years, respectively.

These changes are part of a broader effort to modernize the legal framework protecting the UK's undersea infrastructure, which is crucial for the country's energy and data needs. Subsea cables carry 99% of the UK's international data traffic, while pipelines supply 74% of its gas. The proposals also cover telecommunications cables, electricity interconnectors, and pipelines.

National Security Concerns

The UK government has expressed concerns over suspicious activities, particularly those involving Russian vessels, around its critical undersea infrastructure. Reports indicate that Russian commercial fishing trawlers have been mapping undersea cables, with 500 incidents of Russian boats loitering above these cables reported in the last four and a half years. In response to these threats, the proposed legislation would allow UK ministers to order telecom companies to remove or disable services during national emergencies and compel them to grant officials access to sensitive sites, such as cable landing stations.

Telecoms Minister Ian Murray emphasized the importance of these measures, stating, "Undersea cables are the hidden backbone of modern Britain, carrying the data we rely on every day to message friends and family, do our banking, and run our businesses." Energy Minister Michael Shanks and Security Minister Dan Jarvis also highlighted the critical role these infrastructures play in the UK's energy supply and national security.

Public Consultation and Next Steps

The publication of the White Paper marks the beginning of a 12-week public consultation period, during which the government will seek input from industry experts, stakeholders, and the general public. This consultation aims to refine the proposals before they are finalized. Responses to the consultation will be accepted until January 14, 2027.

The UK government has stressed the resilience of its current subsea cable network, noting that faults are typically caused by accidents or environmental hazards rather than deliberate acts. However, the increasing threats necessitate stronger legal protections to ensure the security and reliability of these essential infrastructures. As the UK navigates a changing security landscape, these proposed measures represent a proactive step in safeguarding its national interests.