UK

The UK was Harbour’s largest producer in 2024, averaging 149 kboepd (2023: 175 kboepd). UK production was underpinned by strong reservoir performance and high operating efficiency across Harbour’s operated Greater Britannia, AELE and Tolmount hubs and new wells and projects on-stream in the second half of the year.

In November 2024, Harbour delivered first oil from the Talbot project, a three-well subsea tieback to J-Area. The project was completed on schedule, within budget and with no recordable injuries, marking a material milestone for Harbour. 2024 also saw a return to drilling at the Britannia satellite fields, bringing on-stream the Callanish F6 infill well in July, while, at AELE, the North West Seymour infill well came on-stream in September. This well, together with plant modifications, has the potential to extend Armada’s field life beyond 2030.

During 2024, Harbour successfully appraised the Leverett gas discovery, made an oil discovery at Gilderoy and a gas discovery at Jocelyn South. Both Leverett and Gilderoy are potential subsea tiebacks to the Greater Britannia hub while Jocelyn South, which was drilled as a keeper well, was brought on-stream through the Judy platform in March 2025.