Notice Of Annual General And Special Meeting

Cornish Metals Inc. (AIM/TSX-V: CUSN) ("Cornish Metals" or the "Company"), a mineral exploration and development company focused on advancing its 100% owned and permitted South Crofty tin project in Cornwall, United Kingdom, announces that it will host its 2025 Annual General and Special Meeting ("AGSM") on Monday 30 June 2025 at 5pm (London time), 9am (Vancouver time). The meeting will take place in a virtual-only format conducted via live audio teleconference.

A Management Proxy Circular ("Circular"), Notice of Meeting and Notice-and-Access Notification are available on the Company's website at https://cornishmetals.com/investors/shareholder-meetings/.

Shareholders on the register on 13 May 2025 will be entitled to vote at the AGSM and should refer to the voting instructions set out in the Circular.

Immediately following the conclusion of the AGSM, which the Company expects to occur at approximately 5:30pm London time, 9:30 am Vancouver time, the Company intends to host a separate online webinar to provide shareholders with the opportunity to attend a presentation of certain additional updates in respect of the Company's activities. For more information on this online webinar and for more details on how to attend, please pre-register by 4pm (London time), 8am (Vancouver time) on 30 June 2025 at https://bit.ly/cornish-metals-update.

ON BEHALF OF THE BOARD OF DIRECTORS

"Don Turvey"

Don Turvey

CEO and Director

Engage with us directly at our investor hub. Sign up at: https://investors.cornishmetals.com/link/0rJqxe

Caution regarding forward looking statements