Correction - Day 42 Acceptance Level Update

This announcement replaces the announcement released on 15 September 2026 at 08:51 a.m. under RNS No 8096U (the “Announcement”)

The Announcement incorrectly implied in the opening paragraph that the all share offer originally announced by Reabold on 1 July 2026 remained ‘recommended’. To clarify, and whilst previously recommended, on 11 September 2026, Union Jack announced that a rejection circular containing, inter alia, the New Board’s view on, and rejection of, the all-share offer for Union Jack by Reabold (the “Rejection Circular”) had been published and made available to Union Jack Shareholders and to persons with information rights.

The offer is no longer recommended. All other details remain unchanged.

All Share Offer

for

Union Jack Oil plc (“Union Jack”)

by

Reabold Resources plc (“Reabold”)

Day 42 Acceptance Level Update

On 11 September 2026, Union Jack announced that the rejection circular containing, inter alia, the New Board’s view on, and rejection of, the all-share offer for Union Jack by Reabold (the “Rejection Circular”) had been published and made available to Union Jack Shareholders and to persons with information rights.

Day 42 acceptance level update

In accordance with Rule 17 of the Code, Reabold confirms that, as at 1.00 p.m. (London time) on 14 September 2026, Reabold had received valid acceptances of the Offer in respect of a total of 8,352,385 Union Jack Shares, representing approximately 5.70 per cent. of the issued share capital of Union Jack.

So far as Reabold is aware, included within the above are valid acceptances in respect of 3,132,144 Union Jack Shares, representing approximately 2.14 per cent. of the issued share capital of Union Jack, which were the subject of irrevocable undertakings to accept the Offer (the “Irrevocable Shares”). Further details of these irrevocable undertakings are as set out in paragraph 8 of Part VII of the Offer Document.

Therefore, as at 1.00 p.m. (London time) on 14 September 2026, Reabold counted 8,352,385 Union Jack Shares, representing approximately 5.70 per cent. of the existing issued share capital of Union Jack, towards the satisfaction of the Acceptance Condition to the Offer.

The percentages of Union Jack Shares referred to in this announcement are based on figures of 146,565,896 Union Jack Shares in issue as at close of business in London on 28 July 2026 (being the last Business Day prior to the publication of the Offer Document).

Action to be taken by Union Jack Shareholders

The Offer will therefore now remain open for acceptances until 1.00 p.m. (London time) on 2 October 2026, which is the Unconditional Date. The Unconditional Date may be brought forward or extended in accordance with the Code, as further described in paragraphs 2.2 and 2.4 of Section C of Part III of the Offer Document.

Shareholder helpline

Hill Dickinson LLP is acting as legal adviser to Reabold.