MPs have backed raising the legal age of marriage to 18 to stop vulnerable children being forced to wed.
In England and Wales, parental consent is needed for 16 and 17-year-olds, while others take part in non-registered marriages at younger ages.
But Tory MP Pauline Latham said this allowed children to be coerced into unions that could damage their lives.
She wants to make all marriages and civil partnerships under 18 illegal, including religious or cultural ones.
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