The force has launched an appeal on social media to help locate 15-year-old Donna-Marie.
Donna-Marie was last seen on February 18 and has now been missing for more than two months.
The teen is understood to be known to be in the Rainham area, but also has links to Hackney.
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Anyone with information about her whereabouts or anybody who sees her should call police on 999 with the reference 01/7177577/25.
Havering MPS wrote on X: “Can you help us find 15 year old Donna-Marie?
“She is known to be in the Rainham area and was last seen on 18/02/2025. She also has links to Hackney.”
