Derbyshire Fire Investigator Matt Lee resumes giving evidence at the trial of Mick and Mairead Philpott and Paul Mosley today.
When asked what sort of noise he would expect to hear during the course of the fire at Victory road, he replied "I would expect it to sound like a well stoked chimney fire, a sound that was akin to a raging bonfire."
Matt Lee also said that he would expect to hear a 'whooshing' sound.
He said this would be due to an ignition of petrol vapour and the sound would be due to a build up of these vapours.
Following Derbyshire Fire Service's recommendations over having sprinklers in homes, here are the best ways to improve fire safety at home.
Speaking exclusively to ITV News, Dawn Bestwick said jail wasn't good enough for MIck Philpott and that "as a coward" he "deserved to die".
The events that eventually led to parents Mick and Mairead Philpott and friend Paul Mosley's conviction of manslaughter.