To date there have been no indications of ministerial disquiet with Sir John Bourn, Britain’s comptroller and auditor general. Ministers speak of him in glowing terms, insisting that he is the embodiment of rectitude. Conservative front-bench spokesmen take the same favourable view.This is very striking in view of the stream of revelations concerning this guardian of our public finances. Embarrassing details emerged last week, courtesy of the Freedom of Information Act, concerning Sir John’s personal extravagance. To put it mildly, they showed that he does not manifest the same hair-shirt attitude to taxpayers’ money that his National Audit Office demands of other public bodies.It is not so much the £27,000 racked up over three years on meals, many at London’s best restaurants, that is a cause for concern.