Martin Currie, the Edinburgh-based fund manager, is closing its Japanese funds to new money from next month because the funds have reached $4bn (€3.2bn). The firm believes taking more money could compromise performance.

Tim Hall, head of client services, said: "Recognising our effective capacity and acting on it is an important aspect of what makes Martin Currie different. As a 'big boutique', we don't want to be the largest, but we do want to be the best."