New Wood Mackenzie analysis finds the UK North Sea at a policy crossroads, with investment outcomes ranging from £7 billion above base case to £11 billion below, a gap shaped largely by the regulatory and fiscal decisions of an incoming government.
The UK North Sea recorded zero final investment decisions in 2025, a figure that captures the damage caused by four years of fiscal unpredictability. It sets the scene for new Wood Mackenzie analysis showing investment could swing by as much as £18 billion, depending on the path chosen by the incoming Prime Minister and new cabinet.
In an upside scenario, a more supportive political and regulatory framework combined with elevated prices could unlock an additional £7 billion of investment (2026 terms) and 740 million boe, a 10% increase in investment and a 20% increase in reserves against base case. In a downside scenario, an uncompromising regulatory approach to platform electrification could cause operators to pull back from pre-sanction projects, resulting in £11 billion in foregone investment, 400 million boe in lost reserves, and production falling below 500 000 boe/d by the mid-2030s. Wood Mackenzie concludes that North Sea risk is, on balance, more weighted to the upside, though how far that extends depends on who Burnham appoints in a reshuffled cabinet.
A new corporate order and a possible BP deal could accelerate recovery
North Sea consolidation has removed 43 of 77 producing companies since 2015, giving rise to a new peer group of UK-only strategic ventures: Ithaca Energy, Adura, and NEO NEXT+. The trio hold interests in 92 of 211 producing fields and will account for 56% of UK production by 2030. Unlike multinational operators, they are not constrained by global capital allocation decisions.
“The UK North Sea has gone a full year without a single new project investment decision, but the conditions underneath are shifting in ways that matter,” said Toby Fulton, Senior Research Analyst, Upstream, Wood Mackenzie. In the past seven months, Ithaca Energy submitted environmental paperwork for Tornado, West of Shetland, and Fotla, while Serica has done likewise for a redevelopment of Kyle, now renamed Kyla. If the new cabinet takes a pragmatic line on electrification and moves the EPL to an early close, the project pipeline that these new agile companies have been quietly building could move quickly.”
BP sits outside this peer group, having not formed a UK strategic venture. Recent reports that BP may sell its UK upstream business mean two of the basin’s largest assets, Clair and the ETAP hub, could change hands, potentially concentrating production among UK-only operators further still.
Greenfield and infill opportunities remain substantial
The UKCS holds over 3 billion boe on licensed acreage. Additional investment beyond our base case of £3.7 billion in commercially viable greenfield discoveries could unlock 220 million barrels of oil and 330 billion cubic feet of gas, with 90% by volume coming from subsea tie-backs which offer quick returns. But new greenfield developments take time, and substantial new volumes would not reach UK supply until after 2030.
Infill drilling offers a faster return. Activity collapsed from an average of 104 wells per year between 2015 and 2019 to 44 per year between 2021 and 2025. A return to pre-2020 levels by the top six producers could deliver more than 60 additional wells over five years, recovering 465 million boe.
A fiscal windfall the government did not budget for
Before the Middle East conflict, the government was reportedly days away from announcing early replacement of the energy profits levy (EPL), the windfall tax on North Sea producers which brings the total marginal rate to 78%, when prices surged. The 2026 price shock will hand the government a windfall it had not planned for, a stark reversal from the position just months ago when the government was reportedly days from announcing early replacement of the energy profits levy (EPL) before prices surged. Wood Mackenzie models that even if the EPL was removed as early as March 2027, three years ahead of schedule, North Sea tax receipts in this parliament would still beat pre-conflict projections if a 2026 price shock is sustained this year.
Political backdrop
The government has faced sustained pressure on its North Sea policy from its biggest electoral threat, Reform UK, as well as the Conservatives. From within the Labour movement, former prime ministers and current union leaders have also joined this criticism. Burnham has said he favours “future-facing” industries over “time-limited” ones but has also said he is willing to listen on the North Sea.