Felicia Boots (above) has admitted killing her two babies who were found dead at the family's upmarket home.
She pleaded guilty to the manslaughter of 10-week-old Mason and his 14-month-old sister Lily in May.
The 35 year-old will not face murder charges after her plea on the grounds of diminished responsibility was accepted by the prosecution at the Old Bailey.
Mrs Boots, who trained as a hairdresser, was unable to appear at two previous hearings.She had been detained at a psychiatric unit and the prosecution's decision followed consideration of doctors' reports.
More top news
With just three days to go until polling stations open, representatives from all parties were out in force across the capital today.
The garden above the Canary Wharf Crossrail station is now open to the public.
First time buyers in London now need an average annual income of £77,000 - nearly double the amount required in the rest of the country.