Dozens evacuated from building in Croydon as 60 firefighters battle blaze.
ITV News exposes the horrific living conditions in a south London tower block that are branded the worst experts have seen.
Sergeant Ratana was killed inside a Croydon police station.
The Met said the investigation into the shooting at Croydon Custody Centre is continuing "at pace".
The officer was shot by a handcuffed suspect in the early hours of Friday.
An investigation into how the suspect was able to kill Sgt Matt Ratana inside a custody is being carried out by the police watchdog.
The suspect is believed to have turned the gun on himself and is in critical condition in hospital.
Metropolitan Police is investigating controversial church facing "several very alarming allegations of sexual abuse" in wake of major HuffPost UK investigation.
A 15-year-old boy and 21-year-old man are both in a critical condition following yesterday's incidents
Neither Kelly Mary Fauvrelle nor her baby son Riley survived.