Union Jack Oil plc announced further to its announcement dated 11 March 2024, that the Company has been informed by the Operator, Reach Oil & Gas Company Inc. ("Reach"), that the drilling rig is on location and that theAndrews-1-17 well has now spudded. The Andrews-1-17 well will test the West Bowlegs Prospect, located in Seminole County, Oklahoma, USA in which Union Jack hold a 45% working interest: Andrews-1-17 well has a geological chance of success estimated by the Operator to be 75%; Approximate ten-day drilling period to a depth of 5,200 feet and Completion time is swift, estimated at approximately a further eight days including perforating and flow-back, if successful. A further update will be given following the Andrews-1-17 well reaching its intended total depth of 5,200 feet, prior to the commencement of wireline logging operations, completion, perforation and testing, if successful.