The 33 year old from York was abducted in March whilst walking home through Clapham.
Former police officer Wayne Couzens will appear at the Old Bailey later today.
The Met's statement reads "We are sickened, angered and devastated by this man’s crimes which betray everything we stand for.
Our thoughts are with Sarah’s family and her many friends. It is not possible for us to imagine what they are going through.
We recognise his actions raise many questions and concerns but we will not be commenting further until the hearing is complete."