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The Sumner Group Mining team comprises seasoned professionals from finance, legal and industry sectors.

David Sumner - Non-Executive Chairman

David is a long term investor with over 25 years of experience in developing successful global business platforms focusing on the healthcare, security & defence, mining and leisure sectors. 


He has been instrumental in seeding, developing and managing the growth of many of the Sumner Group operating businesses and oversaw the public listings of both Sumner Group Mining and Sumner Group Health. He founded Sumner Group in 2018 to consolidate and build upon his business interests.


He has served on numerous private and public company boards in both an executive and non-executive capacity and has a track record of raising capital through debt and equity fundraising.
David founded The Sumner Foundation, a charity specifically set up to benefit disadvantaged students in the UK and also more recently refugees in the Middle East & North Africa.

Johnny Martin Smith - Chief Executive Officer

Johnny has extensive experience in the mining industry, having started as a mining analyst with the stockbroker, Davis Borkum Hare (latterly Bank of America Merrill Lynch) in 1983 in Johannesburg, before moving to London where he worked in specialist mining sales for SG Warburg.  Subsequently he worked at UBS, Credit Suisse and Williams de Broe.  He founded Smiths Corporate Advisory in 1999 which he developed into a leading investor relations business focused on the mining sector, and then sold to Westhouse Holdings in 2011, where he became head of mining.  He is an Independent Non-Executive Director of IRC Limited and Chairman of its Remuneration Committee.

Tim Feather - Chief Financial Officer

Tim was appointed CFO of Sumner Group Mining in 2019 bringing over 25 years of public company experience.  Having qualified as a chartered accountant with Deloitte in 1994, he subsequently went on to co-found the corporate broking division at Brown Shipley, one of the longest standing merchant banks in the City.  In 2003 he co-led a management buy-out of that business, forming Westhouse Securities, where as Head of Corporate Finance he focused on natural resources.  Prior to his appointment at Sumner Group Mining, Tim was a director at WH Ireland, specialising in natural resources.  He has an LLB from the University of Nottingham.

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