Barclays has for a second time in less than a year turned to its most senior investment bankers to secure billions of pounds in new funding from a range of sovereign wealth fund investors.

Bob Diamond, chief executive of investment banking and wealth management, appointed Tom Kalaris, chief executive of Barclays Wealth Management , to oversee the capital raising process. Kalaris was named head of wealth in 2005 and was previously previously a member of the Barclays Capital executive committee and head of distribution and research.