Leigh Creek Copper Mine & Redmoor Project Updates

Strategic Minerals plc (AIM: SML; USOTC: SMCDF), an international mineral exploration and production company, provides the following updates regarding its wholly owned subsidiaries, Leigh Creek Copper Mine Pty Ltd ("LCCM") and Cornwall Resources Limited ("CRL").

LCCM - call option payment expected week commencing 9 June 2025

Further to the Company's announcements of 24 April and 23 May 2025, the Company has received written confirmation from the Purchaser that it has secured the necessary funds and will make the payment to Strategic Minerals of A$100,000 for an exclusive call option to acquire 100% of the Leigh Creek Copper Mine (the "Call Option") during the week commencing 9 June 2025. The Company will make a further announcement on receipt of the funds.

As previously announced, under the Call Option, which will be exercisable for a period of six months from the initial payment of A$100,000 (or such longer period as may be agreed by the parties), the Purchaser may elect to acquire 100% of LCCM on the terms announced on 24 April 2025.

CRL - drilling contract signed for 23 June 2025 start date

Following the securing of a match grant funded investment from the UK Government, through the UK Shared Prosperity Fund, managed by the Cornwall and Isles of Scilly Good Growth Project "SPF Project", and the completion of a £1,000,000 fundraise by Strategic Minerals, CRL is pleased to confirm that it has signed a drilling contract with Priority Drilling UK Ltd for a fully-funded drilling programme at Redmoor as the major component of its match grant funded project. CRL is exploring for further tungsten, tin, and copper mineralisation in its Tamar Valley licence areas in east Cornwall, with a key focus on its Redmoor Project.

Project Updates:

• Drilling contract signed with the programme to commence on 23 June 2025, with one drill rig completing the first three boreholes (expected to take approximately three months), followed by an additional second rig joining the programme for a further three months, or until the programme is completed
• The drilling contract covers CRL's proposed, and fully permitted, drill programme of c.5,300m of diamond core drilling. The drill programme is part of CRL's SPF Project, and as such 50% of the programme costs will be recovered from the grant funding
• Data from drilling and the ongoing relogging and sampling programme will be utilised to inform a new JORC (2012) compliant Mineral Resource Estimate ("MRE") for Redmoor, expected to be completed in Q1 2026. This will be the first update since Redmoor's JORC compliant inferred MRE (2019) of 11.7 Mt at 1.17 Tin equivalent (0.56% WO₃, 0.16% Sn, 0.50% Cu)
• CRL Leadership Team, including Mark Burnett, CRL Director, and SML Executive Director, to attend UK Mining Conference in Cornwall, on the 11-12 June, in advance of drill programme commencement. This will be preceded by a site visit to Redmoor

Dennis Rowland, CRL Project Manager, commented:

"The signing of the contract for drilling services marks the first major milestone for CRL's SPF Project and our plans for unlocking further project advancements at Redmoor. With drilling now locked in to commence on 23 June we are working at pace to complete our other programme preparations.

"We look forward to providing further updates as the project develops."

1 Equivalent metal calculation notes; Sn(Eq)% = Sn% x 1 + WO3% x 1.43 + Cu% x 0.40. WO3(EQ)% = Sn% x 0.7 + WO3 + Cu% x 0.28. Commodity price assumptions: WO3 US$ 33,000/t, Sn US$ 22,000/t, Cu US$ 7,000/t. Recovery assumptions: total WO3 recovery 72%, total Sn recovery 68% & total Cu recovery 85% and payability assumptions of 81%, 90% and 90% respectively

About the CIOS Good Growth Fund and UK Shared Prosperity Fund

Cornwall and Isles of Scilly has been allocated £184 million for local investment through the Shared Prosperity Fund. This new approach to investment is designed to empower local leaders and communities, so they can make a real difference on the ground where it's needed the most.

UK Shared Prosperity Fund