For most of its modern existence, the network of undersea cables threading the seabed around Britain has operated largely beyond the reach of government emergency powers. Owned and run primarily by private telecom companies, those cables carry almost all of the UK’s international data traffic. Three-quarters of the country’s gas supplies travel through related undersea pipelines. The legal framework governing them dates, in substantial part, from the Victorian era — designed for telegraphic cables and never updated to address the realities of fibre-optic infrastructure or the security environment of the twenty-first century.
That gap has now become untenable, at least in the government’s assessment.
In April of this year, UK officials publicly accused Russian submarines of conducting a covert operation targeting cables and pipelines in waters north of the country. The accusation was not the first. British authorities had previously accused Russia of using spy ships to map undersea infrastructure, and last year revealed that the Royal Navy had tracked one such vessel — the Yantar — as it passed near UK waters. Russia denied the allegations and characterised the British government’s posture as “anti-Russian alarmism.”
The diplomatic exchange did little to resolve the underlying vulnerability. A parliamentary report, published last year, had already warned of security weaknesses in undersea infrastructure with cascading consequences for transport, supply chains, financial services and payment systems. NATO allies, for their part, have been raising alarms about Russian activity near offshore infrastructure across the North Atlantic.
By Thursday, the government had moved from diagnosis to proposed remedy, publishing a policy paper that acknowledged, with notable candour, that it currently lacks the emergency powers necessary to respond to an incident affecting undersea cables or pipelines. The paper noted that no equivalent existed to the intervention mechanisms already available in the water and energy sectors, and that broader national emergency powers would likely prove too slow and blunt to deploy during a fast-moving crisis at sea.
The proposals are significant in scope. Ministers would gain the authority to order telecom companies to hand over information, modify their services, or disable them entirely in connection with a specific threat or incident. Officials would also be granted access to physical sites, including cable landing stations — the onshore facilities where undersea cables connect to national networks. Companies that refuse to comply could face fines of up to £17 million or ten percent of global turnover, whichever is greater.
Criminal penalties would accompany the new regime. Intentional tampering with undersea cables or energy pipelines would carry a maximum prison sentence of 14 years. Reckless conduct would attract up to ten years. Grossly negligent conduct would carry a two-year maximum. Fines in criminal cases would be unlimited.
The orders issued under the new powers would ordinarily be published. They could, however, be classified on national security grounds — a provision that raises legitimate questions about oversight and accountability that the consultation process will need to address.
The government’s ambitions extend beyond UK territorial waters, which reach only 12 nautical miles from the coast. Ministers say they intend the powers to apply across the “full extent” of undersea services, a formulation that implicitly acknowledges how little of the vulnerable infrastructure sits within easy legal reach. The policy paper concedes this will require international coordination and notes that the government is examining how its proposals compare to equivalent frameworks in other countries.
The proposed legislation will not emerge immediately. A consultation with industry closes in January, after which new laws must be drafted and passed. Energy infrastructure companies are excluded from the current proposals, though the paper states that equivalent powers for that sector are being considered separately.
What the document makes plain, even in its careful official language, is the scale of the accountability gap that has been allowed to persist. Critical national infrastructure, carrying data and energy for tens of millions of people, has sat for years in a legal grey zone — too important to ignore, too complex to regulate quickly, and too dispersed to protect without the kind of international cooperation that remains, for now, aspirational rather than operational.