Barclays chairman Marcus Agius is standing down after the British banking giant was last week fined for attempting to manipulate inter-bank lending rates, the company said on Monday. Announcing his resignation, Agius said last week\'s events had \"dealt a devastating blow to Barclays\' reputation. As chairman, I am the ultimate guardian of the bank\'s reputation. Accordingly, the buck stops with me and I must acknowledge responsibility by standing aside.