The band, featuring Stuart Wood, Eric Faulkner, Les McKeown and brothers Derek and Alan Longmuir, were best known for hits including Shang-A-Lang, Bye Bye Baby and Give a Little Love.
From the banks, the glitterati include Barclays chief Bob Diamond, Jamie Dimon of JP Morgan, Deutsche Bank CEO Josef Ackerman, Morgan Stanley Chairman John Mack, Lloyds chief Eric Daniels, Brady Dougan of Credit Suisse and HSBC's Stuart Gulliver.