Mairead Philpott tells a jury that on the night of the fire all the children were fast asleep in their beds.
She also told the court that all the windows of the children's bedrooms were locked for security reasons.
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.