UK MPs Warn of Glaring Arctic Defence Gaps Exposing Critical Infrastructure to Russia

A parliamentary defence committee in the United Kingdom has warned that shortages of Royal Navy warships and submarines are leaving the country exposed in the Arctic and High North. The report says the gaps could put undersea cables, energy supplies and Atlantic supply routes at risk in the event of a conflict. It argues that Russia could use the region to threaten UK critical infrastructure and wider Nato sea lanes.

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The Commons Defence Committee said the UK has "glaring gaps" in its ability to defend the Arctic region. It said there is a "shockingly low availability" of submarines and a temporary loss of the ability to operate beneath Arctic ice. The report added that Russia could conceal and protect its own submarines under the ice while threatening Nato sea lanes, UK critical infrastructure and the UK's nuclear deterrent.

The Ministry of Defence said it is "clear-eyed about the threat Russia posed" and is investing heavily to protect Britain's undersea cables. The report also noted that Russian submarine activity in the North Atlantic has returned to levels not seen since the Cold War, according to the ministry earlier this year. Committee chair Tan Dhesi said the Arctic is a demanding and hostile environment and that Russia is seeking to dominate it for military advantage.

He said work to address the gaps "cannot start soon enough". The warning matters because the High North has become central to UK defence planning in recent years. The region includes the Arctic Circle and nearby areas, and it sits on routes that are important for transatlantic military and commercial movement.

The report says any conflict there could affect the UK population, civilian and military infrastructure, and vital supply lines from the United States. The committee also raised the issue of wider Nato readiness, saying the UK should consider whether the British-led Joint Expeditionary Force should focus more on the High North. That suggestion comes amid uncertainty over US support for Nato, which the report says could affect how northern European allies organise their response.

Former Prime Minister Sir Keir Starmer has previously warned that Russia could attack Nato by the end of the decade, adding to concern about the pace of defence preparation. The report does not describe an active attack, but it sets out a strategic warning about capability gaps and deterrence. It is not clear from the report how quickly the shortages in ships and submarines can be fixed, or what specific changes the government will make in response.

What happens next will depend on whether ministers accept the committee's recommendations and how quickly funding and force availability can be improved.

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