Police are growing increasingly concerned for the safety of a mother-to-be from Harold Hill.
Emma Aldington, 25 is due to give birth this month.
Scotland Yard said her local health visitor is keen to trace her to ensure the welfare of Emma and her unborn child.
She is currently thought to be living in either Newham or Redbridge.
Emma is white with fair hair and blue eyes.
Anyone who knows the whereabouts of Emma Aldington is asked to contact the Missing Persons Unit at Romford Police Station on 01708 779230 or call 101.
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