Smirking Mick Philpott stuck two fingers up after being described by a judge as a "disturbingly dangerous man" when he was sentenced to life for killing six of his children in a house fire.
"Shameless Mick", as he was known on his estate, showed no remorse as he was jailed with a minimum 15-year term for being the "driving force" behind the plot to start the house fire to win custody of his children.
He and wife Mairead, along with Paul Mosley, were each found guilty of six counts of manslaughter on Tuesday after a trial at Nottingham Crown Court.
Judge Mrs Justice Thirlwall told him: "You are a disturbingly dangerous man. Your guiding principle is what Mick Philpott wants, Mick Philpott gets. You have no moral compass."
Mairead, 32, and 46-year-old Mosley were both jailed for 17 years. Philpott, his wife and Mosley killed 10-year-old Jade Philpott and her brothers John, nine; Jack, eight; Jesse, six; Jayden, five; and 13-year-old Duwayne in the fire at their Allenton home.
Later, Chancellor George Osborne said the case highlighted the need for reform of the benefits system, as he questioned why taxpayers were funding "lifestyles like that".
Mr Osborne, who has been leading the Government's defence of its sweeping welfare changes, said Philpott was responsible for his "absolutely horrendous" crimes, but said there was a "question for government and for society" about the benefits that allowed Philpott to live the way he did.
The fatal blaze that tore through the house in Victory Road, Derby, was started by the trio in an effort to try and frame Philpott's former mistress, Lisa Willis, after she left the family home with her five children three months earlier. She had lived in the three-bed council house for 10 years with the Philpotts and their six children until she became unhappy and fled.
The judge said Philpott, 56, had become "obsessed" with 29-year-old Miss Willis and his plan to blame her for the fire and get his children back at a pre-scheduled court hearing on May 11 last year - the same day as the fire - was "outside the comprehension of any right thinking person". She added: "It was a wicked and dangerous plan."
Members of the Philpott family, who were sitting in the public gallery, broke into applause as the judge finished sentencing. One shouted: "Die, Mick, die." Another said: "See you, Mairead. Hope you enjoy life on your own."