The incident happened on Sunday evening (July 16) with police being called to the scene in Western Road at around 4.23 pm.
A 24-year-old woman and infant had fallen "from height" at the back of a property in the road.
London Ambulance Service was also present and rushed the pair to a central London hospital.
The woman is now in a stable condition, and while the baby has sustained injuries, they are not believed to be life-threatening.
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