A Conservative former minister has called for first-cousin marriage to be banned in the UK.
Introducing the proposals in Parliament, Richard Holden said the children of first cousins were at greater risk of birth defects and the practice should be prohibited to protect public health.
However, independent MP Iqbal Mohamed argued a ban would be ineffective and said these issues would be better addressed through education programmes to raise awareness of the risks.
Downing Street said the expert advice on the risks of first-cousin marriage was clear but indicated that the government had no plans to change the law.