Martin Currie, the Edinburgh-based asset manager, has sold a 25% stake in itself to Jacob Rothschild and a US-based investment firm after rejecting takeover approaches from private equity buyers in March.

Martin Currie, which manages £14.4bn, has agreed to sell 7.5% of its equity to Rothschild, a renowned adviser to wealthy individuals, who recently backed Richard Horlick's Spencer House investment boutique.