23 March 2026

Strategic Minerals plc

("Strategic Minerals" or the "Company")

Notice of MRE/Economic Update & Webinar

Strategic Minerals plc (AIM: SML; USOTC: SMCDF), an international mineral exploration and production company, is pleased to announce that its wholly owned subsidiary, Cornwall Resources Limited ("CRL"), expects to be able to publish a new Mineral Resources Estimate ("MRE") and updated Economic Sensitivity Analysis for its wholly owned Redmoor Tungsten-Tin-Copper Project ("Redmoor") in southeast Cornwall on Thursday, 26 March 2026.

The MRE and updated Economic Sensitivity Analysis are key outputs from the exploration drilling and associated activities undertaken over the past year at Redmoor which were part-funded by the UK Government through the UK Shared Prosperity Fund.

The MRE will combine the results of last year's drilling and relogging programme and 1980s drilling datasets. The Economic Sensitivity Analysis will update the outputs from the 2020 Redmoor Scoping Study using the updated MRE, metallurgical testwork results, and other updates, and incorporating new metal price assumptions. Work is progressing on schedule to finalise all outputs prior to the scheduled release date.

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Strategic Minerals intends to host a webinar to discuss the MRE and new economic assessment on Thursday, 26 March 2026 at 11 a.m. GMT.

The webinar will be hosted by Strategic Minerals' executive directors, Charles Manners and Mark Burnett, who will be joined by Dennis Rowland, Managing Director of CRL. The webinar will be conducted via the Investor Meet Company platform. A recording of the webcast will be made available on the Company's website later that day.

Investors can sign up to Investor Meet Company for free and add Strategic Minerals in order to attend the webinar via: https://www.investormeetcompany.com/strategic-minerals-plc/register-investor. Investors who already follow Strategic Minerals on the Investor Meet Company platform will automatically be invited.

The webinar will be followed by Q&A and participants may submit questions at any time during the webinar. 

Dennis Rowland, CRL Managing Director, said:

"We look forward to the completion of the project outputs and announcement of a new MRE and updated Economic Assessment for Redmoor. We further welcome the opportunity to present these results to shareholders and answer any questions."

Mark Burnett, Strategic Minerals' Executive Director, said:

"The Board is pleased to provide the scheduled release date of the MRE and updated Economic Assessment. The CRL team's ability to stick to schedule and produce all programme outputs within the 12-months schedule has been exemplary."

Notes to Editors

About Strategic Minerals plc and Cornwall Resources Limited

Strategic Minerals plc (AIM: SML; USOTC: SMCDY) is an AIM-quoted, producing minerals company, actively developing strategic projects in the UK, United States and Australia.

In 2019, the Company completed the 100% acquisition of Cornwall Resources Limited and the Redmoor Tungsten-Tin-Copper Project.

The Redmoor Project is situated within the historically significant Tamar Valley Mining District in Cornwall, United Kingdom, with a JORC (2012) Compliant Inferred Mineral Resource Estimate published 14 February 2019:

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

More information on Cornwall Resources can be found at: https://www.cornwallresources.com

In September 2011, Strategic Minerals acquired the distribution rights to the Cobre magnetite project in New Mexico, USA, through its wholly owned subsidiary Southern Minerals Group.  Cobre has been in production since 2012 and continues to provide a sustainable revenue stream for the Company.

In March 2018, the Company completed the acquisition of the Leigh Creek Copper Mine situated in the copper rich belt of South Australia.  The Company has entered into an exclusive Call Option with South Pacific Mineral Investments Pty Ltd trading as Cuprum Metals to acquire 100% of the project.

About the CIOS Good Growth Fund and UK Shared Prosperity Fund

This project is part-funded by the UK Government through the UK Shared Prosperity Fund.  Cornwall Council is responsible for managing projects funded by the UK Shared Prosperity Fund through the Cornwall and the Isles of Scilly Good Growth Programme.

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.

The UK Shared Prosperity Fund proactively supports delivery of the UK-government's five national missions: pushing power out to communities everywhere, with a specific focus to help kickstart economic growth and promoting opportunities in all parts of the UK.

For more information, visit

https://www.gov.uk/government/publications/uk-shared-prosperity-fund-prospectus

For more information, visit https://ciosgoodgrowth.com