Anyone tuning into David Cameron's less than riveting testimony before the Treasury Select Committee might have concluded that Greensill Capital was a brilliant supply chain finance firm providing technology and innovation to Britain's top companies and Whitehall. As part of his 'due diligence', the former prime minister repeatedly trotted out the blue-chip names of Astrazeneca and Vodafone as good reasons to believe in his Aussie mate Lex Greensill. In seeking to big up Greensill's fintech credentials, he invoked online banks Revolut and Monzo. Just because a company goes into administra...