Formed in 2011 by the merger of metals broker Marex Financial and energy broker Spectron Group, London-based Marex Spectron has 10 offices, including in Singapore, Hong Kong and New York. The group’s other markets include financial futures, agricultural products and freight. Profits grew 31% to £19.5m as it benefited from reduced commodities trading by banks and new business in America and Asia. Led by chief executive Ian Lowitt, 53, its largest shareholder is private-equity firm JRJ Group.