A father who attacked his four young children with a hammer before driving them into a wall at 92 mph, has had his jail term increased by 10 years.
Owen Scott admitted four counts of attempted murder and dangerous driving after the incident, which occurred while he was in a drug-induced psychosis.
The 29-year-old from Southampton, was jailed for life at Sheffield Crown Court in February and ordered to serve at least 14 years in prison.
But his minimum term was increased to 24 years after judges at the Court of Appeal ruled the original sentence was "unduly lenient". Two girls, aged seven and eight, and two boys, aged 21 months and nine months, were left with "life-threatening and life-changing" injuries as a result of multiple blows delivered by Scott, the court heard.
All four youngsters suffering brain damage and one of his daughters will need a wheelchair for the rest of her life.
Lord Justice Treacy, sitting with two other judges, said: "In our judgment the facts of this case demonstrate a case of particular gravity. Four young lives have been grievously affected, their mother's life has been blighted and the level of harm which has been done is very high indeed. It follows from that analysis that the sentence imposed below was unduly lenient."