- Sir Paul launched independent charity Marriage Foundation last year to support married couples, but said the charity did not take a stance on gay marriage
- He says marriage breakdowns and their impact on society affects 99.9 per cent of the population, which is where more investment should be spent
- It comes after the leader of the Roman Catholic Church in England and Wales attacked the government's gay marriage bill, labelling it "undemocratic" and a "shambles".
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