Serica Energy has completed its acquisition of a portfolio of Southern North Sea gas assets from Spirit Energy for net consideration of £33 million after adjustments for interim cash flows, adding approximately 10,000 barrels of oil equivalent per day to production and 18.7 million barrels of oil equivalent of proved and probable reserves to its balance sheet.
The transaction, announced earlier in 2026, closes today, 1 October 2026, and takes immediate effect. The acquired assets add a further operating hub to Serica’s UK Continental Shelf portfolio and increase the company’s exposure to natural gas production at a time when UK domestic gas supply remains a politically and commercially significant issue following the post-Iran war supply disruption.
Serica described the deal as delivering an immediate and meaningful contribution to production and near-term cash generation. The 18.7 million boe of 2P reserves added through the transaction is a material increase for a company of Serica’s size and extends its production horizon across the Southern North Sea.
Spirit Energy is the North Sea joint venture between Centrica and LetterOne, which has been actively reducing its UKCS portfolio as the partners manage long-term exposure to UK upstream assets. The sale continues a pattern of smaller independents and mid-cap operators absorbing assets shed by larger joint ventures and majors who are prioritising capital elsewhere.
The deal is the latest in a series of acquisitions by Serica that have progressively built its UK production base from a relatively modest foundation following the 2022 acquisition of assets from Shell. The company has established itself as one of the more acquisitive mid-tier players on the UKCS, targeting assets where it can apply its lean operating model to assets that have been non-core for previous owners.
The Southern North Sea gas province, which was the primary source of UK domestic gas production for three decades before being overtaken by Norwegian imports, has attracted renewed attention as the UK government looks to maximise domestic production capacity. Infrastructure in the basin is mature but still operational, and the consolidation of assets under focused operators such as Serica is broadly seen as extending the economic life of fields that might otherwise be decommissioned earlier than necessary.
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