Admission to Trading on OTCQB, US

11 November 2025

Metals One Plc

("Metals One" or the "Company")

Admission to Trading on the OTCQB Venture Market in the United States

Metals One (AIM: MET1), a critical and precious metals early-stage project developer and investor, is pleased to announce its Ordinary shares have been approved to trade on the OTCQB Venture Market ("OTCQB") in the United States and commenced trading on OTCQB on 10 November 2025 under the symbol "MTOPF".

OTCQB is provided through OTC Markets Group Inc. ("OTC Markets"), located in New York. OTC Markets operates the world's largest electronic interdealer quotation system for US broker dealers and offers multiple media channels to increase the visibility of OTC-listed companies. OTCQB is a well-established market designed to provide enhanced visibility and liquidity for international companies seeking to broaden their US investor base.

The decision to trade on OTCQB follows Metals One's strategic entry into the U.S. critical minerals sector by acquiring direct or indirect interests in multiple uranium and vanadium exploration projects, in addition to one gold exploration project, this year. These investments align with the U.S.' push to source more domestic uranium, key for nuclear power and low‑carbon energy, and vanadium, which increasingly supports grid‑scale storage systems. Trading on OTCQB will allow North American investors to gain exposure to these opportunities - in addition to Metals One's full portfolio - which have the potential to support the U.S.' energy security.

Trading on OTCQB will not impact trading of the Company's existing Ordinary shares on the AIM market of the London Stock Exchange which will continue under the ticker symbol "MET1", and no new Ordinary shares were issued through this process. The Company will continue to make all announcements and disclosures to the London Stock Exchange through the Regulatory News Service and is not subject to any Sarbanes-Oxley or US Securities and Exchange Commission reporting requirements.

Dan Maling, Managing Director of Metals One, commented:

"Admission to trading on the OTCQB represents a step in improving access to Metals One for U.S.-based investors where the Company is developing a footprint of prospective early-stage uranium, vanadium and gold exploration projects."

Enquiries:

About Metals One

Metals One is pursuing a strategic portfolio of critical and precious metals projects and investments underpinned by the Western World's urgent need for reliably and responsibly sourced raw materials - and record high gold prices. Metals One's shares are listed on the London Stock Exchange's AIM Market (MET1) and trade on the OTCQB Venture Market in the United States (MTOPF).

Map of Metals One projects/investments

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Nominated Adviser

Beaumont Cornish Limited ("Beaumont Cornish") is the Company's Nominated Adviser and is authorised and regulated by the FCA. Beaumont Cornish's responsibilities as the Company's Nominated Adviser, including a responsibility to advise and guide the Company on its responsibilities under the AIM Rules for Companies and AIM Rules for Nominated Advisers, are owed solely to the London Stock Exchange. Beaumont Cornish is not acting for and will not be responsible to any other persons for providing protections afforded to customers of Beaumont Cornish nor for advising them in relation to the proposed arrangements described in this announcement or any matter referred to in it.