UK Pushes for More North Sea Gas to Cut Dependence on US LNG and Lower Emissions

National Gas announced that the United Kingdom will have enough gas to satisfy summer demand despite recent tensions in the Strait of Hormuz. The network, which runs the country’s gas pipelines, says domestic and Norwegian supplies will cover the low‑usage months, meaning liquefied natural gas (LNG) imports will be minimal this summer.

The real challenge lies ahead. While renewable rollout is accelerating, gas will remain a core part of the UK’s energy mix for at least the next two decades. It accounts for about 37% of total gas consumption in 2024, with domestic heating being the largest single use. Replacing millions of boilers with heat pumps cannot happen quickly, especially given the current sluggish pace.

Government plans for 2030 still require the full 35 GW of gas‑fired generation capacity to stay online as backup. Energy department data released in early 2025 showed gas demand “broadly stable” for the third consecutive year, representing roughly half of the nation’s 75.2% fossil‑fuel dependency.

In the debate over new North Sea drilling licences, the key question is where future gas will come from. Oxford energy economist Sir Dieter Helm, speaking on a Chatham House podcast, warned that gas will dominate the energy supply for the next decade or two and that the cheapest, least polluting option is pipeline gas—not LNG.

Analysis from Wood Mackenzie confirms this hierarchy. Pipeline gas from modern Norwegian platforms has the lowest carbon intensity, followed by UK North Sea pipelines. By contrast, LNG adds significant emissions during liquefaction and regasification, and US LNG is the most carbon‑intensive because much of it originates from shale gas with higher methane leakage.

Wood Mackenzie’s import forecasts to 2045 paint a stark picture: if domestic production wanes, the UK could rely on US LNG for over 60% of its total gas supply by 2035. The firm notes that Middle‑East gas is geared toward Asian markets, while US cargoes are increasingly directed to Europe, raising concerns about over‑reliance on a single supplier.

These projections underpin the argument for expanding UK North Sea extraction. More domestic drilling would reduce dependence on US LNG—a geopolitical risk given the United States’ tendency to use energy as a foreign‑policy lever—and would also lower the overall carbon footprint of the gas supply chain.

Critics often claim that North Sea output is exported, so it does not improve national security. Two counter‑points are clear: first, gas delivered directly via pipeline to the UK network is inherently more secure than trans‑Atlantic cargoes; second, the UK could negotiate long‑term, fixed‑price contracts with producers, a model that worked well in the early days of North Sea development.

None of this diminishes the importance of renewables and nuclear power. Electrification remains the long‑term goal, but gas will stay in the energy basket for years to come. Offshore Energies UK estimates that, with a pragmatic licensing approach, reliance on LNG could be limited to 6% of total gas supplies by 2035.

Assuming political stalemate eases, the pending approval of the Jackdaw field—accounting for roughly 6% of current domestic production—could spark a more nuanced debate about the UK’s gas procurement strategy, moving beyond the simplistic “renewables vs. gas” narrative.

Reflecting on the recent Iran‑UK conflict, Prime Minister Rishi Sunak highlighted the need for “secure, homegrown energy”. The logical follow‑up is twofold: accelerate electrification to cut gas demand, and while gas remains essential, avoid turning the UK into an “energy prisoner of the US”. Beyond the geopolitical and environmental benefits, expanding North Sea output would also support jobs, tax revenue, and the balance of payments.