There are some things you do not need an official report to tell you - that John Prescott thinks he is a babe magnet, that President Mugabe is not entirely in favour of white farmers and that Al-Qaeda takes a pretty dim view of the West. The report commissioned by the BBC into itself concluded with something equally blindingly obvious. It said that the organisation is institutionally biased and especially gullible to the blandishments of politically driven celebrities, such as Bono and Bob Geldof. Almost anyone in Britain could have told the BBC that for free, but maybe it’s better to have it in an official report.

All media organisations are biased and that applies especially to newspapers. But our bias is openly declared. If readers want different views they have no compulsion to pay and can go elsewhere. The BBC is in a different category; everyone has to pay for it and it is in the tricky position of being founded to be free from bias. It is meant to be a beacon of objective truth in a wildly polarised world. A tall order. In theory even rabid rightwingers and demented leftists can listen or watch (and increasingly read online) the BBC without discerning any tilt. But what emerges from the report is a picture of an organisation with a liberal, anti-American bias and an almost teenage fascination with fashionable causes. The report singles out the BBC’s overwhelming and uncritical backing for the campaign over Live Aid and now the Live Earth concerts on global warming.

That the BBC should investigate itself is perhaps admirable, but only if it acts on the conclusions. The likelihood is that it will lament its shortcomings, pledge to do something and carry on much as before. Changing its cosy culture will take more than a report; some who have worked there say it would require a small neutron bomb. The BBC is a self-perpetuating liberal arts club. Recruitment is the key. It needs to employ more nonconformist journalists whose paper of choice is not The Guardian.