Cross-Party Revolt Builds Against UK North Sea Tax as Investment Collapses
Former ministers from Labour, Conservative, SNP and Liberal Democrat ranks unite to challenge windfall levy they warn threatens energy security and jobs without cutting emissions.
The UK Treasury is holding talks with North Sea oil and gas producers about potentially scrapping the Energy Profits Levy before its scheduled 2030 expiry, as pressure mounts from an unprecedented cross-party coalition warning current policy accelerates industry decline without delivering climate gains.
Former Labour energy minister Brian Wilson, SNP cabinet minister Fergus Ewing, UK Conservative ministers Amber Rudd and Charles Hendry, and Liberal Democrat Scottish Secretary Alistair Carmichael signed a declaration in June 2024 that Energy Policy can transcend party politics. The intervention reflects rare consensus in a political system where North Sea policy has become bitterly partisan.
The scale of the downturn became clear last year when no new wells were drilled in British North Sea waters for the first time since 1964, according to analysis from Wood Mackenzie. Labour’s increase of the Energy Profits Levy to 38% brought the headline tax rate for the oil and gas sector to 78%, making Britain one of the least competitive jurisdictions for upstream investment globally.
The Security Paradox
The cross-party intervention challenges the government’s core premise that restricting domestic production advances climate goals. Government policy is causing an accelerated decline of oil and gas production from the United Kingdom Continental Shelf, which is worsening Energy Security, forcing job losses and increasing the carbon emissions associated with gas supply, according to parliamentary testimony from Offshore Energies UK.
The state-owned National Energy System Operator warned late last year that reducing domestic gas output and boosting reliance on fuel imports would make the UK more vulnerable and increase the risk of unexpected disruptions.
The environmental calculus is equally contentious. GMB general secretary Gary Smith argued that switching off North Sea investment is “absolute madness” and “catastrophic for the environment because we are importing oil and gas, which is far more carbon intensive than producing it ourselves”.
Total receipts from North Sea taxes were £5.0 billion in 2023/24, but receipts are forecast to fall to £2.0 billion by 2029/30 as energy prices and production decline. Industry analysis suggests the windfall tax is cannibalizing its own revenue base by destroying the production it taxes.
European Divergence
The UK approach now stands in stark contrast to continental policy. On 23 April 2025, the Netherlands Climate and Green Growth minister signed the ‘Sector Agreement on Gas Extraction in the Energy Transition’ to maximise gas production from the Dutch North Sea and reduce import dependency, despite the Dutch North Sea being more mature than the UK Continental Shelf.
Netherlands Minister for Climate Policy Sophie Hermans stated: “In an increasingly unstable world, it is crucial that we take responsibility for our own energy supply. This agreement helps us move forward with less reliance on other countries, lower emissions, and a future-focused approach”.
Norway’s approach to oil and gas taxation has remained remarkably consistent since the 1990s, creating an environment where companies can make long-term investment decisions with confidence. While Norwegian tax rates are high, the predictability of the fiscal regime has proven more valuable to investors than lower rates with frequent changes.
| Country | Production Trend | Policy Stance |
|---|---|---|
| UK | Declining sharply | 78% tax, no new licenses |
| Norway | Stable growth | Consistent regime, new exploration |
| Netherlands | Maximizing output | Government facilitation |
Economic Fallout Accelerates
Harbour Energy saw nearly all of its 2022 profits evaporate under the expanded tax regime, forcing it to cut jobs and shelve projects. The company announced plans putting 250 workers at risk in early 2025, with executives pointing directly to the levy. The firm expects to reduce employee numbers by another 100, on top of 600 jobs already eliminated since 2023.
Major operators BP and Shell have publicly reviewed UK investment plans, while TotalEnergies trimmed spending.
Offshore Energies UK’s analysis warns that keeping the levy until 2030 may boost short-term tax revenue by £6 billion, but will accelerate the North Sea’s decline with wider economic damage. The EPL is blocking new field development and stalling existing projects, with 282 fields operating under a “no new investment” scenario.
“The North Sea is not being phased down through a managed transition, it is being forced into decline by policy decisions that are driving investment away.”
— Russell Borthwick, Chief Executive, Aberdeen & Grampian Chamber of Commerce
Political Crosscurrents
Politically, it’s a minefield. Labour must juggle climate goals with energy security, jobs, and the rising pressure from Nigel Farage’s Reform UK, which has pledged to scrap the levy outright. Meanwhile, the Greens want it made permanent, and the Scottish National Party argues that it threatens tens of thousands of North Sea jobs.
The Tony Blair Institute in February 2026 recommended the UK rethink its approach to oil and gas in the North Sea, allowing exploration drilling and easing taxes for the industry, marking the latest criticism of Labour’s current policy.
Ahead of the Spring Statement, the Scottish government called for an “immediate end” to the EPL, warning of the “risk it poses to Scotland’s just energy transition”. Scottish energy secretary Gillian Martin wrote that “UK Government decisions are driving an accelerated decline in North Sea oil and gas and opening up a gap with the renewables industry”.
- Five former UK energy ministers from four parties have signed cross-party declaration challenging current North Sea policy
- 2025 saw zero exploration wells drilled in UK waters for first time since 1964
- 78% headline tax rate makes UK one of least competitive basins globally
- Netherlands and Norway pursuing opposite strategies, maximizing domestic production for energy security
- Treasury now in active discussions about early termination of windfall tax
The Investment Calculation
Wood Mackenzie estimates the windfall tax could wipe out as much as £15 billion of potential investment in Britain’s offshore oil and gas output. Keeping the Energy Profits Levy would eliminate all non-essential investment in the UK shelf, as it would compete with friendlier tax jurisdictions.
Industry proposals would see the headline tax rate drop from 78% to 40%, but the new mechanism would still ensure additional tax revenue is generated when commodity prices are high, offering greater predictability and fairer investment allowances.
With reforms, the sector could pay an extra £12 billion in taxes by 2050 as production is maintained. A range of credible sources estimate the UK will use around 10-15 billion barrels of oil and gas between now and 2050 even if net zero targets are met, however UK producers are only on track to meet 4 billion barrels of this demand.
What to Watch
Chancellor Rachel Reeves faces a defining choice in the Spring Statement on 3 March. While the UK government is not expected to remove the EPL this year, the industry is hoping a new price mechanism designed to replace it may come into effect earlier than 2030.
The outcome will test whether Labour can navigate between its climate commitments and economic reality, or whether the cross-party consensus building among former ministers signals a broader recognition that current policy has failed on its own terms—undermining both energy security and emissions reduction.
For investors, the implications extend beyond the North Sea. The UK’s treatment of a strategic domestic resource during an energy transition may serve as a template—or cautionary tale—for how democracies balance security, industrial policy, and decarbonization under political pressure. Europe’s largest economies are watching closely, and several have already chosen a different path.