Police were called to Broome Road following a house fire on Sunday (November 9) at 1.21am.
Half of the first floor of a mid-terraced house was damaged by the fire.
However one woman was declared dead at the scene, the London Fire Brigade has confirmed today (November 11).
The fire was eventually extinguished by 4am after four engines and 25 firefighters were called to the scene.
Crews included those from Twickenham, Feltham, Richmond and Southall fire stations.
Days after the incident, the cause of the fire is still under investigation.
