A University of Cambridge graduate who killed two Indonesian women after wreaking a “sadistic” three-day streak of rape and torture was today found guilty of their murders.

Rurik Jutting, 31, a Peterhouse alumnus and former Secretary of the History Society (CLIO), will serve two concurrent life sentences following his unanimous conviction at a trial in Hong Kong.

The Surrey-born banker, who completed a Cambridge History and Law degree in 2008, resigned from his £350,000-a-year trading post at Bank of America Merrill Lynch on the week of the fateful attacks.

Friends from Cambridge told the court that Jutting, a gym obsessive and member of Peterhouse Boat Club, was “awkward” around girls. Yet, they described him as “hardworking and intelligent” before his descent into narcissism, sex and drugs in the Far East.

The extent of his cocaine and alcohol-fuelled abuse was exposed when Jutting called police to his flat in November 2014. Inside, officers found the bodies of migrant workers Sumarti Ningsih and Seneng Mujiasih, who had frequented the red light district of the city-state.

Ningsih, a 23-year-old mother, had sustained severe knife wounds to her neck and buttocks, while the mutilated body of Mujiasih, 29, had been stuffed into a suitcase on the balcony.

The presiding Judge Michael Stuart-Moore said: “During this trial we have been made to dredge the very depths of depravity during the three days of torture he subjected his first victim to.

The judge emphasised Jutting’s comfortable upbringing, saying his salary and job were things most people “only dream of”.

“He described himself as evil and a monster, and neither is adequate to describe the true nature of what happened. The defendant is the archetypal sexual predator,” Stuart-Moore added.