Successful funding for UKEn Hydrogen projects

The information contained within this announcement is deemed by the Company to constitute inside information under the Market Abuse Regulation (EU) No. 596/2014, as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018. Upon publication of this announcement, this information is now considered to be in the public domain.

UK Oil & Gas PLC

("UKOG" or the "Company")

Successful funding for UKEn Hydrogen projects

UK Oil & Gas PLC (London AIM: UKOG) is pleased to announce that it has successfully raised gross proceeds of £3 million by means of a placing (the "Placing") of new Ordinary Shares (the "Placing Shares") at a price of 0.03 pence per share (the "Issue Price"). The Issue Price represents a discount of approximately 35% per cent to the Closing Price of 0.046 pence per Ordinary Share on 1st October 2025, being the latest practicable business day prior to the publication of this Announcement.

Use of Proceeds:

In its latest Annual Report (see RNS 30th September, 2025) the Directors highlighted the Company's transition away from the petroleum sector into clean power, emphasising that its South Dorset and Yorkshire salt-cavern hydrogen storage and generation projects will constitute the Company's future core focus. Consequently, by funding both its planned hydrogen development activities and ongoing petroleum sector commitments this material placing will enable the Company to advance its energy transition over the coming year.

More specifically, the funding will also enable the Company to commission and deliver the necessary engineering concept and design studies that are essential to deliver the planned collaboration between our wholly owned subsidiary UK Energy Storage ("UKEn") and National Gas (see RNS 1st October 2025). The Company sees that this collaboration will support and strengthen the Company's activities related to securing government revenue support via the Hydrogen Transport and Hydrogen Storage Business Model ("HSBM") allocation rounds, now scheduled to commence in H1 2026. Following meetings with the government's HSBM team on 23rd September 2025 the new requirement for both storage and pipeline operators to submit joint applications for government revenue support makes the delivery of such studies and planned collaboration key for UKEn's future success.

The funding will also enable UKEn to progress a potential combined electrolytic hydrogen generation and local scale salt-cavern hydrogen storage scheme in central eastern Dorset. The funding will permit the necessary technical studies to be undertaken to build upon initial discussions with Dorset Council and a significant Dorset based industrial hydrogen offtaker.

Additionally, the proceeds will also be used to complete economic modelling to further discussions with energy infrastructure and sector specialists with the object of securing a key strategic joint venture partner for UKEn's hydrogen storage projects.

Placing Summary

· The Placing raised £3,000,000 (before expenses) through the issue of 10,000,000,000 Placing Shares at the Issue Price.

· The net proceeds of the Placing will be utilised as described above.

· Participants in the Placing have subscribed on the basis of the customary terms and conditions of the Placing.

The Placing

The Company will issue 10,000,000,000 Placing Shares, to raise gross proceeds of £3,000,000 to participants in the Placing. Admission to trading on AIM is expected on or around 8th October 2025 ("Admission"). CMC Markets UK Plc ("CMC"), trading as CapX, acted as the Company's sole placing agent in respect of the Placing.

Stephen Sanderson UKOG's Chief Executive commented:

" This material funding will help move our hydrogen projects towards fruition, permit us to deliver on our collaboration with National Gas and strengthen our intended submission of applications for government revenue support in the coming year."

Placing Information

The Placing is conditional inter alia on the placing agreement dated 1st October 2025 between the Company and CMC (the "Placing Agreement") not having been terminated and Admission.

The Placing Shares will be issued, credited as fully paid, and will rank pari passu with the existing Ordinary Shares in issue in the capital of the Company, including the right to receive all dividends and other distributions (if any) declared, made or paid on or in respect of such shares after the date of their issue.

Admission to trading

Application will be made to AIM for Admission, which is expected to become effective and dealings in the Placing Shares to commence at, 8.00 a.m. on or around 8th October 2025.

Following Admission, the total voting rights in the Company will therefore be 28,249,134,666 and Shareholders will be able to use this figure as the denominator by which they are required to notify their interest in, or change to their interest in, the Company under the Disclosure Guidance and Transparency Rules.

With respect to the Company's RNS of 7th August 2025 regarding the issue of 960,427,000 ordinary shares in the Company to the Company's Employee Benefit Trust, application for admission is being made at the same time as the Placing Shares with admission expected to become effective on the same day at, 8.00 a.m. on or around 8th October 2025 and which does not affect the total voting rights for this announcement.

For further information, please contact:

UK Oil & Gas Plc

Stephen Sanderson / Guzyal Mukhametzhanova /Kris Bone Tel: 01483 941493

Zeus Capital Limited (Nominated Adviser and Broker)

James Joyce / James Bavister / Andrew de Andrade Tel: 020 3829 5000

CMC Markets (Joint Broker)

Douglas Crippen Tel: 0203 003 8632

Communications

Brian Alexander Tel: 01483 941493