Notice of General Meeting

5 August 2025

Union Jack Oil plc

("Union Jack" or the "Company")

Notice of General Meeting

Union Jack Oil plc (AIM: UJO), a UK and USA focused onshore hydrocarbon production, development and exploration company announces that, further to the fundraising announced on 23 July 2025, a notice of general meeting (the "General Meeting") will be posted to shareholders today and will be available shortly on the Company's website: www.unionjackoil.com

The General Meeting will be held on 26 August 2025 at 11:00 a.m. at the George White Suite, The Bristol Hotel, Prince Street, Bristol BS1 4QF.

At the General Meeting a resolution will be proposed to authorise the Directors to issue the warrants relating to the fundraising and to empower them to disapply pre-emption rights in relation to the allotment of Ordinary Shares for cash pursuant to the exercise of the warrants.

For further information, please contact:

Union Jack Oil plc  [email protected]

David Bramhill, Executive Chairman

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