Announcement PDF Notice of General Meeting 23 October 2026 Cornish Metals plc (AIM: TIN) (“Cornish Metals” or the “Company”), a mineral exploration and development company focused on advancing its wholly owned and permitted South Crofty tin project in Cornwall, United Kingdom, announces that, following the Company’s Fundraising announcements of 20 October and 22 October 2026, the General Meeting will take place at 10.00 a.m. on 9 November 2026 at the offices of Fieldfisher LLP, Riverbank House, 2 Swan Lane, London, EC4R 3TT. Further details are set out in the Notice of General Meeting, which will be posted to Shareholders today. A copy of the Notice of General Meeting will shortly be available on the Company’s website at: https://investors.cornishmetals.com/fundraise-october-2026 For further details of the Fundraising, please refer to: (i) the news release dated 20 October 2026 (titled “Proposed Fundraising of approximately £135 million to develop the South Crofty tin project”); and (ii) the news release dated 22 October 2026 (titled “Result of Fundraising”). Capitalised terms not defined shall have the same meaning as given to them in the Company’s announcement released at 7.00 a.m. on 20 October 2026. ENDS For additional information please contact: Cornish Metals Fawzi Hanano Emily Allhusen investors@cornishmetals.com info@cornishmetals.com Tel: +44 1209 715 777 SP Angel Corporate Finance LLP (Nominated Adviser and Placing Agent) Charlie Bouverat Adam Cowl Jen Clarke Tel: +44 203 470 0470 Berenberg (Joint Broker and Joint Bookrunner) Jennifer Lee Ivan Briechle Tel: +44 20 3753 3040 Peel Hunt (Joint Broker and Joint Bookrunner) Ross Allister David McKeown Tel: +44 20 7418 8900 Hannam & Partners (Placing Agent) Andrew Chubb cornish@hannam.partners Tel: +44 207 907 8500 2 BlytheRay (Financial PR) Tim Blythe Megan Ray Said Izagaren cornishmetals@blytheray.com Tel: +44 207 138 3204