Horse Hill Oil Site Sold for £1m as New Drilling Bid Emerges

Published: 16 September 2026. The English Chronicle Desk. The English Chronicle Online

The company that spent more than a decade pursuing oil production at Horse Hill in Surrey has sold its interests in the controversial site for £1m, after the project became the subject of a landmark Supreme Court ruling on climate impacts.

The sale marks a major change in direction for the former UK Oil & Gas, which has now changed its name to UK Energy Group and is shifting its business towards energy storage and other projects associated with the energy transition. At the same time, the company acquiring the Horse Hill interests is seeking planning permission for a new oil development at the Surrey site.

The proposed development has revived a planning dispute that reached the UK’s highest court in 2024. The Supreme Court’s judgment in the case, brought by campaigner Sarah Finch on behalf of the Weald Action Group, established that greenhouse gas emissions resulting from the eventual combustion of oil produced by a proposed extraction project had to be considered within the environmental impact assessment required for that project.

The ruling has become known as the Finch judgment and has implications beyond Horse Hill because it addressed how climate consequences should be assessed when authorities consider planning applications for fossil-fuel extraction.

At Horse Hill, near Horley, the original project involved retaining and extending an existing well site and drilling additional wells. The Supreme Court recorded that the earlier proposal envisaged six wells and commercial oil production over a period of years. The court concluded, by a three-to-two majority, that Surrey County Council’s earlier decision was unlawful because the environmental assessment had failed to include emissions that would inevitably arise when the extracted oil was ultimately used as fuel.

The decision represented a significant change in the legal assessment of the project’s climate effects. The court noted that the eventual combustion of the oil was not merely a hypothetical possibility but an inevitable consequence of the proposed extraction, and that the resulting emissions could be estimated using established methods.

The latest developments have a different corporate dimension. UK Oil & Gas, which had spent substantial sums developing its Horse Hill interests, has now completed its exit from the UK onshore oil and gas sector. The London Stock Exchange records the company’s name change to UK Energy Group in September 2026 and also records the Horse Hill interest sale announced in June.

The company had previously placed a substantially higher value on its interests in the Horse Hill licence area. According to the financial and transaction history reported in connection with the project, valuations reached tens of millions of pounds during the period when investors were assessing the potential scale of the oil resource.

The eventual £1m sale is therefore a sharp reduction from the values previously attached to the asset. Before the transaction, UKOG’s accounts had already reduced the balance-sheet value of its Horse Hill interests to a much smaller figure.

The company’s change of direction reflects the financial uncertainty surrounding an oil project that has faced prolonged planning, legal and regulatory obstacles. UK Energy Group has been developing plans involving hydrogen storage and salt-cavern energy storage as it moves away from its former focus on UK onshore oil and gas.

The Horse Hill interests have nevertheless not disappeared from the development pipeline. The new owner, Energy B, has taken control of Horse Hill Developments Ltd and is pursuing a renewed planning application.

The new application seeks permission for four production wells, an oil-processing area, facilities for loading tankers and a well intended for fluid reinjection. The proposal would allow the extraction of hundreds of thousands of tonnes of oil over two decades.

That application now faces a different legal environment from the one that existed when the earlier planning decision was made. Following the Supreme Court ruling, the assessment of climate effects associated with the eventual use of extracted oil is an important part of the environmental case.

The Supreme Court’s reasoning was specific and detailed. It found that the refining process did not break the causal connection between extracting the crude oil and its eventual combustion. Because the oil produced by the proposed development would inevitably be refined and used, the resulting greenhouse gas emissions were considered an indirect effect of the extraction project for the purposes of the environmental impact assessment.

The current planning application therefore comes under close scrutiny from campaigners who opposed the original development.

Sarah Finch has criticised what she considers shortcomings in the environmental assessment accompanying the renewed proposal. She has argued that the project’s emissions should be examined in the wider context of existing and approved fossil-fuel developments rather than being considered in isolation.

The planning documents cited in the current dispute estimate that the proposed development could produce about 2.3m tonnes of greenhouse gas emissions over its lifetime, including emissions associated with the eventual burning of the oil. The application characterises the project’s contribution to the UK’s projected carbon budget as small.

Campaigners dispute that assessment and argue that the size of the project’s contribution should not be considered independently of cumulative emissions from other fossil-fuel developments.

The disagreement illustrates one of the central questions surrounding the post-Finch planning environment: how local authorities should assess an individual fossil-fuel project while also considering its relationship with wider national climate objectives and other sources of emissions.

The Supreme Court’s judgment did not itself prohibit oil extraction at Horse Hill. Instead, it established that the environmental assessment for such a project must properly address the downstream greenhouse gas emissions associated with the oil’s eventual use. The final planning decision remains a matter for the relevant planning authority, subject to the applicable legal framework.

The new developer has also presented an energy-security argument. Energy B says domestic oil and gas production can reduce reliance on imports during periods of international uncertainty and energy-price volatility. The company has indicated that the oil would be refined in the UK and that gas associated with the development would serve the domestic market.

Campaigners have challenged that interpretation, arguing that oil is traded through international markets and that domestic extraction does not necessarily mean that the resulting petroleum products will be reserved for British consumers.

Those competing arguments are likely to form part of the planning debate as Surrey County Council considers the application.

The issue also has a wider economic dimension. Fossil-fuel assets can lose value when planning rules, climate policies, litigation and market expectations change. Guy Prince of the energy-transition thinktank Carbon Tracker described Horse Hill as an example of what the organisation calls “regulatory stranding”, where changes in regulation and climate-related legal decisions can materially affect the value of fossil-fuel assets.

For a smaller company whose business is concentrated around a single development, such changes can have a particularly significant effect. The sale of Horse Hill by its former owner and the company’s subsequent move towards energy-storage projects demonstrate how the value and strategic importance of an energy asset can change over time.

The Supreme Court case itself was closely watched because of the wider implications for planning law. Its ruling clarified that environmental impact assessments for certain oil projects cannot exclude foreseeable emissions generated when the extracted product is eventually used.

The court’s judgment also emphasised that climate change is a global phenomenon and that the location where greenhouse gases are released does not alter their impact on the climate.

For Surrey County Council, the current application consequently presents a new test of how those principles are applied in practice. The authority must consider the environmental information submitted with the proposal alongside the relevant planning law, government guidance and representations received during consultation.

The formal consultation on the latest application has already closed, with the council expected to consider the submissions before reaching a decision. The precise timing of that decision remains dependent on the planning process.

Campaigners have indicated that they could consider further legal action if permission is granted and they believe the environmental assessment does not comply with the law. Any such challenge would have to be considered on its own legal grounds and would not automatically determine the outcome of the planning application.

The Horse Hill story therefore now involves two contrasting developments. The former developer has effectively left the UK onshore oil and gas sector and is pursuing energy-storage opportunities, while a new company is attempting to revive oil extraction at the same site.

The financial history of the project also highlights the uncertainty surrounding fossil-fuel developments in a changing regulatory environment. An asset once associated with much higher valuations has ultimately changed hands for £1m, while the legal and planning questions surrounding its potential use remain unresolved.

The next decision by Surrey County Council will determine whether the latest proposal can proceed through the planning system. Whatever the outcome, Horse Hill remains an important case for understanding how local planning decisions, climate law, energy security and the economics of fossil-fuel investment increasingly intersect in the UK.