£ One of my favourite scenes in Casablanca is when Captain Louis Renault pronounces he is "shocked, shocked!" to find out there has been gambling going on in Rick's Bar. So I was fascinated to read that Markus Braun, former chief exec of Wirecard, said last week he was surprised to learn there was fraud at the company he ran, shortly before it went bust. It is up to the court to decide on the merits of his excuse, but should this now become known as the Louis Defence?

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