A council officer who dressed as a tramp to sexually assault schoolgirls has been jailed for 13 years.
De Boise was known as "Mr Nice Guy" by his work colleagues
Father-of-two Anthony De Boise, 58, attacked his victims at beauty spots in south London and Surrey.
He admitted assaulting six girls aged 13 to 16 between 1989 and 1996, but claimed his behaviour was linked to his diabetes medication.
De Boise, of Holmbury St Mary, Surrey, also disguised his educated voice, Southwark Crown Court heard.
Sentencing on Monday, Judge Nicholas Loraine-Smith said the long-term effects on De Boise's victims had been "terrible".
He told him although a change in medication for diabetes may have affected him, ultimately "you were simply acting out your sexual fantasies".
The judge said that although De Boise stopped his attacks in 1996, he could still present a danger to teenage girls "if the right circumstances arose".
A statement from the victims said: "These attacks have had a catastrophic effect on our families.
"No sentence will ever be long enough.
"It is satisfying that some form of justice has been done today. He has taken so much away from us."
Earlier the court heard how De Boise led a bizarre double life of respectable family man and brutal paedophile.
Wearing dark glasses and scruffy clothes he would scour local beauty spots looking for victims.
Over a period of seven years he subjected girls, sometimes at knifepoint, to lengthy ordeals of pain and degradation, the court was told.
Jurors heard how he threatened to rape, injure and even kill the girls before ordering them to strip.
He managed to evade capture for several years by duping detectives into thinking they were looking for an unemployed tramp.
De Boise usually dressed impeccably and held down a well-paid job as a Wandsworth Council planning officer where he was known as "Mr Nice Guy", jurors heard.
Prosecutors said he was well regarded by friends who described him as "kind, caring, decent, considerate and gentle... someone who could be trusted".
He was finally caught after a relative accused him of stealing money.
A DNA sample given to the Metropolitan Police's cold case rape unit matched one found following the attacks.
Det Con Andy Lawrence said the defendant's attacks had caused "mass panic in the area".
"He was a predatory sexual offender who preyed on young and vulnerable children.
"He acted with no regard other than to satisfy his own sexual lust," he said.
Maintaining a change in medication was to blame for her husband's behaviour, Susan De Boise said he was still "very much loved" by his family.
"Tony's family and friends... truly believe that the incidents occurred whilst he was in a state of severe diabetic hypoglycaemia, which has a profound effect on the brain.
"I am heartbroken for everyone involved," she added.