Barclays is comfortable with its exposure to Europe and now has more cash on its balance sheet than before the 2008 financial crisis, CEO Robert Diamond told CNBC Wednesday.

Bob Diamond

"If you step back and look at banks in the U.S. and in the U.K., very early on the banks raised capital," said the executive of the London-based bank. Barclays has cash on the balance sheet of 140 billion to 150 billion pounds every day, he said, compared with 25 billion to 50 billion pounds at the end of 2007.