The Bridget Jones’ Diary star, whose eleven-year-old son Ollie has Down's Syndrome, criticised the new screening technique.
Speaking to BBC Radio 4's Today Programme she said the "arms race for new technologies is terribly upsetting" and "dehumanising" to people with Down's syndrome.
She added that "people with Down's Syndrome have never been included in the debate, they have never been asked".
05/05/2016
2m 17s