Tamar Minerals plc (AQSE: TMR) is a British exploration company focused on tin and copper in Devon and Cornwall; the historic heartland of UK mining and one of the most promising critical minerals regions in Europe.  Devon and Cornwall produced over two million tonnes each of tin and copper during the 19th century, feeding the industrial revolution and supplying global markets. Tin is now at or near all-time highs, copper is essential to the energy transition, and the UK Government is actively seeking domestic sources of the critical minerals it needs.  

Tamar is the only listed pure-play explorer targeting this opportunity. Armed with a proprietary 3D model of over 338 historic mines, the Company has identified and secured ground over the most compelling unexplored targets in the region; including Great Wheal Vor, once the second-richest tin mine in Cornwall, and Devon Great Consols, once the richest copper mine in the world.  

We are funded for drilling at Great Wheal Vor, targeting high-grade tin extensions to the Main Lode at depth. The mineral rights are wholly owned following the acquisition of the Duke of Leeds Mineral Rights Estate in March 2026 & eliminating royalties and option payments permanently.  

The Company is backed by a management team with deep expertise in tin mining and Devon and Cornwall geology, including CEO Mark Thompson, an acknowledged expert in the region's mineral systems.  

Tamar is not waiting for the UK's critical minerals moment. It is helping to create it.  

Regulatory announcements: tamarminerals.com/regulatory-announcements


Tamar Minerals plc

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Tamar Minerals plc

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