Announcement by Reabold Resources PLC on PEDL183

28 April 2023

Union Jack Oil plc

("Union Jack" or the "Company")

Announcement by Reabold Resources PLC on PEDL183

Union Jack Oil plc (AIM: UJO), a UK focused, onshore hydrocarbon production, development and exploration company notes today's announcement from Reabold Resources plc ("Reabold") which includes an analysis Reabold independently commissioned in respect of an exploration well drilled on PEDL183 in 2013. The full text of Reabold's announcement can be found on its website (https://reabold.com/).

Union Jack holds 16.665% economic interest in PEDL183.

For further information, please contact:

Union Jack Oil plc info@unionjackoil.comDavid Bramhill

SP Angel Corporate Finance LLP +44 (0)20 3470 0470Nominated Adviser and Joint Broker  Matthew Johnson Richard Hail Kasia Brzozowska

Shore Capital +44 (0)20 7408 4090Joint Broker  Toby Gibbs Iain Sexton