Johnson Matthey plc is a UK-based specialty chemicals and sustainable technologies company with roots dating back to 1817. Founded in London by Percival Norton Johnson and George Matthey, the firm originally established its reputation in refining and assaying precious metals. Over two centuries, Johnson Matthey has expanded its expertise from traditional precious metals processing into a diversified portfolio of high-technology materials and catalysts.
The company’s core activities revolve around clean air and emission control technologies, where it supplies advanced catalytic converters and diesel particulate filters to the automotive and industrial sectors. In parallel, Johnson Matthey provides a comprehensive suite of precious metals services, including refining, recycling and managed inventory programs. This segment supports multiple industries—from electronics and medical devices to chemical production—by ensuring sustainable sourcing and efficient reuse of platinum group metals.
Recent years have seen Johnson Matthey accelerating its development of sustainable mobility and energy solutions. The firm produces battery materials for electric vehicles, including high-performance cathode active materials, and is investing in hydrogen fuel cell components and carbon capture technologies. These activities underpin its strategic aim to enable the transition to a net-zero economy, working closely with automakers, industrial partners and energy providers across Europe, North America, Asia and Africa.
Headquartered in London, Johnson Matthey is guided by a Board of Directors and an Executive Committee led by Group Chief Executive Robert MacLeod. The management team emphasizes innovation, operational excellence and stringent safety and environmental standards. Through global R&D centers and manufacturing sites, the company maintains a strong focus on ethical governance and sustainability, seeking to deliver long-term value for stakeholders and contribute to broader environmental goals.
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