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Do-it-yourself paternity tests go on sale in one of Britain's best known chemists from today. They're designed to settle family disputes without getting a doctor or the courts involved, but some campaigners say the tests could lead to more break-ups and strain on child support services.

Simon and Lorna spoke to Dr Mandy Hartley, a technical manager at Anglia DNA who manufacture the kits and Professor Jonathan Montgomery, chair of the Human Genetics Commission.