Controversial DNA test comes to UK

A personal DNA test that sparked controversy in the US has launched in the UK.

The UK's Medicines and Healthcare Products Regulatory Agency (MHRA) says the 23andMe spit test, which is designed to give details about a person's health risks based on their DNA, can be used with caution.

But critics say it may not be accurate enough to base health decisions on.

The company, California-based 23andMe, stands by its test.

Newsnight's Chris Cook reports.