Serica Energy plc is a British independent upstream oil and gas company focused on operations in the UK North Sea. The company explores, develops, and produces crude oil and natural gas across multiple offshore hubs and subsea infrastructure. Its key assets include operating interests in the Bruce, Keith, and Rhum fields, as well as the Triton Area and Columbus Development. Following its 2023 acquisition of Tailwind Energy, Serica diversified its portfolio to achieve a roughly equal production split between oil and gas. The company generates revenue primarily through the sale of hydrocarbons to commodity traders, refiners, and other energy buyers. Serica is recognized as a major domestic energy supplier, responsible for a significant portion of the UK's natural gas production.