Peter King lured in and groomed the three children, who were between 6 and 15 years old at the time, by taking them on swimming trips, buying them clothing and food and then taking them back to his flat in Highgate, Birmingham.
King, now aged 72, worked as a taxi driver at the time and used his black cab to ferry around the girls and sometimes their friends too.
One girl he abused, who was 15 at the time, became pregnant by King before having a termination.
She revealed this information years later to help our Public Protection Unit (PPU) prosecute him for his actions.
Following the trial, which concluded at Birmingham Crown Court last Friday (October 31), King, of Malin Close, Southampton, was convicted of 15 sex offences, including multiple incidents if rape and indecent assault.
He was remanded into custody ahead of sentencing on January 12.
Detective Investigating Officer Liz Weston, from the PPU, said: “This has been a long and complex investigation into the abuse of young girls who were groomed by King.
“He preyed upon them when they were at their most vulnerable.
“He took advantage of their own personal circumstances and gave them pocket money, bought them gifts, clothing and food and took them on day trips and holidays.
“He tried to portray that he was a good man who cared for them, but the jury saw through those lies.
“I’m pleased that the women he abused as children all those years ago have finally received the justice they so deserve.
“I commend their bravery in being able to speak out and share their stories and
“I would ask anyone who has encountered similar experiences, or any kind of abuse, historically or recently, to speak to the police.
“We are here to create a safe space for you and we will listen.”