United Oil & Gas PLC / Index: AIM / Epic: UOG / Sector: Oil & Gas

02 March 2026

United Oil & Gas plc

("United" or "the Company")

United Completes SGE Programme Offshore Jamaica

United Oil & Gas Plc (AIM: UOG), the oil and gas company with a high-impact exploration asset in Jamaica and a development asset in the UK, is pleased to announce the successful completion of its Seabed Geochemical Exploration ("SGE") programme, including the final Stage 3 piston core survey, within the Walton-Morant Licence offshore Jamaica.

The SGE programme represents a key operational step toward further de-risking the Walton-Morant Licence and progressing discussions with interested parties.

Highlights

·   All 3 stages of the SGE survey completed safely and as planned within the Walton-Morant Licence offshore Jamaica

·   Stage 1 - Multibeam Echosounder (MBES) successfully completed with 1,189 line kilometres of high-quality data acquired and processed

·    Stage 2 - Heat flow probe data acquired in both the Walton and Morant basins

·    Stage 3 - Based on the integration of the MBES data with existing seismic data, 42 piston coring sites were selected. During piston coring operations seabed sediment was successfully recovered from all 42 selected locations.

The piston core samples are now being prepared for shipment to TDI-Brooks laboratories in the United States where they will undergo geochemical analysis to test for the presence of thermally derived hydrocarbons. Initial laboratory results are expected in the coming weeks.

Results will be integrated with existing datasets to support continued advancement of United's technical evaluation and further de-risking of the Licence area. Positive results are expected to strengthen the Company's data room materials and support discussions with interested parties.

The Company will provide further updates in due course.

Brian Larkin, CEO of United Oil & Gas, commented:

"Completing the SGE programme safely and as planned is an important milestone for United and the Walton-Morant Licence. The recovery of seabed sediment cores at all 42 selected locations is a fantastic achievement, and we look forward to receiving the results of the laboratory analysis and to integrating them into our subsurface work shortly.

At the same time, we will continue to progress discussions with potential partners with the objective of advancing towards a potentially transformational offshore exploration drilling phase for Jamaica."

Illustrative imagery from the programme, including a multibeam echosounder three-dimensional seabed visualisation and photographs of vessel and piston coring operations, is included below.

Figure 1: A three-dimensional, perspective view of the high quality MBES bathymetry data acquired in the Walton Basin (illustrative).

Additional Information

"On the Rocks" podcast episode 2, where United discuss the completed Stage 1 MBES and next steps of the SGE Jamaica survey 2026 is available to view here:

https://youtu.be/dMAtCalsI-o

"On the Rocks" podcast episode 1, where United discuss the Evidence for an active Petroleum System offshore Jamaica, is available to view here:

https://youtu.be/Ui9krmLFXp4

**ENDS**

Beaumont Cornish Limited ("Beaumont Cornish") is the Company's Nominated Adviser and is authorised and regulated by the FCA. Beaumont Cornish's responsibilities as the Company's Nominated Adviser, including a responsibility to advise and guide the Company on its responsibilities under the AIM Rules for Companies and AIM Rules for Nominated Advisers, are owed solely to the London Stock Exchange. Beaumont Cornish is not acting for and will not be responsible to any other persons for providing protections afforded to customers of Beaumont Cornish nor for advising them in relation to the proposed arrangements described in this announcement or any matter referred to in it.

Notes to Editors

United Oil & Gas is an oil and gas company with a development asset in the UK and a high impact exploration licence in Jamaica.

The business is led by an experienced management team with a strong track record of growing full cycle businesses, partnered with established industry players and is well positioned to deliver future growth through portfolio optimisation and targeted acquisitions.

United Oil & Gas is listed on the AIM market of the London Stock Exchange. For further information on United Oil and Gas please visit www.uogplc.com