We return, without apology, to one of the favourite subjects of us all. That is, the lessons to be learned from the lucky few who break free from the surly bonds of private banking and soar high to seek fulfilment in doing their own thing.

An exemplar we have just heard about is Frankie Fox, late of Credit Suisse, who has formed her own food company, The Foraging Fox. It specialises in all-natural beetroot ketchups. To our surprise, the piquant beet is proving a hit and Frankie is selling her wares well, both at home and abroad.

Up to now, our attitude to the bee...