A boy and girl who killed a suspected paedophile "to teach him a lesson" are facing years behind bars.
The pair killed Robert Daley, 45, after lawyers dropped a sex abuse case against him. He was found dying of five stab wounds in his Brixton flat on April 23, hours after being told he would not be prosecuted.
The teenagers, who were 14 when they were arrested but are now 15, were found guilty at the Old Bailey on 10-2 majorities. The boy was found guilty of murder and the girl was found guilty of manslaughter. Both were remanded in custody for sentencing next month.
The court heard the girl, her 16-year-old sister and a woman had complained to police that heavy-drinking crack user Mr Daley had abused them. Only the 16-year-old had been willing to proceed with her allegations.
Soon after receiving a call from police telling him lawyers considered there was a lack of evidence, Mr Daley rang the older girl. She texted him back, saying: "Stop calling and texting me. I really don't want anything to do with you. You are a perverted man."
The court heard she rang her sister and the boy - the father of the baby she was expecting.
Soon after the 14-year-olds arrived at his home a struggle broke out in the kitchen and he was fatally injured when two knife wounds punctured his heart.
The teenagers denied the charges and told the jury that Mr Daley grabbed the girl round her throat and was trying to indecently assault her. They said the boy started jabbing him with a knife to try to free the girl as she struggled with 6ft 1in Mr Daley.
The boy told the court: "I saw him pinning her to the worktop. He had his left hand on her throat and his right hand was trying to touch her. I told him to stop, screaming at him. He was not paying any attention."
Jonathan Rees, QC, prosecuting, told the jury: "The question you have to deal with is not whether he deserved what he got but whether he was murdered. We maintain that following the telephone call, the defendants set out to teach him a lesson using violence. Robert Daley was subjected to an unprovoked knife attack in his kitchen. There was no sexual assault or grabbing round the neck."