Shell U.K. and Equinor UK have completed the merger of their UK offshore oil and gas operations to form Adura, now the largest independent producer in the UK North Sea. The new 50–50 joint venture will produce more than 140,000 barrels of oil equivalent per day in 2026 and operate 12 major fields, including Mariner, Rosebank, Buzzard, Shearwater and Penguins.

Adura is headquartered in Aberdeen and employs around 1,200 transferred Shell and Equinor staff. Both companies say the combination creates a more cost-competitive portfolio and strengthens long-term value in a mature basin. Shell and Equinor will each retain several non-merged UK and cross-border assets.