National Storage Mechanism | Additional information

1 August 2025

Union Jack Oil plc

("Union Jack" or the "Company")

Total Voting Rights

For the purposes of the Financial Conduct Authority's Disclosure Guidance and Transparency Rules, the Company's issued share capital as at 31 July 2025 consisted of 152,865,896 Ordinary Shares.

The Company holds 6,300,000 shares in Treasury, consequently the total voting rights comprise 146,565,896 Ordinary Shares which is the figure which may be used by shareholders as the denominator for the calculation by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the Financial Conduct Authority's Disclosure and Transparency Rules.

For further information, please contact:

Union Jack Oil plc info@unionjackoil.com

David Bramhill

SP Angel Corporate Finance LLP +44 (0)20 3470 0470

Nominated Adviser and Joint Broker

Matthew Johnson

Richard Hail

Jen Clarke

Zeus Capital Limited +44 (0)20 3829 5000

Joint Broker

Antonio Bossi

Simon Johnson

George Duxberry

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