On the day official figures showed that nearly half of all babies are now born to unmarried mothers, Sir Paul blamed family break-up on social changes including the shift in attitudes towards cohabitation and increasing numbers of children born outside marriage.
He said that 50 years ago 'on the whole cohabitation was regarded as something you didn't do, to have a child outside marriage, so that created a framework that stopped very much breakdown.
'We've had a cultural revolution in sexual morality and sexual behaviour,' the judge said. 'We need to have a reasonable debate about it and decide what needs to be done – and I don't mean Government,' he said. 'They didn't cause the problem.
... It was statistically proven parents were far more likely to stay together until their children's 16th birthday if they were married, he said.
Official figures suggest that an average marriage lasts around 11 years, but a cohabitation is likely to break up in three if the partners do not marry.