LONDON, UK / ACCESS Newswire / November 11, 2025 / Further to its announcement of board changes on 3 November 2025 and the conclusion of necessary due diligence, Guardian Metal Resources plc (AIM:GMET)(OTCQX:GMTLF), a mineral exploration and development company focused on tungsten within Nevada, USA, announces the formal appointment of Mr Michael Xavier Schlumpberger to its Board with immediate effect. Michael will be an Independent Non-executive Director of Guardian Metal and will be a member of the Audit Committee and the Remuneration Committee. He replaces Mr. Mick Billing who is retiring from the Board, as announced previously.