Actor John Alford, 54, has been jailed at St Albans Crown Court after being found guilty of sexually assaulting two girls, aged 14 and 15, in 2022.
The former London's Burning star will serve an eight-and-a-half year sentence following the incident, which took place at a party at a friend's home.
The court heard how Alford, of North London, had sex with a drunk 14-year-old and also sexually assaulted her friend, 15.
The actor, who appeared before the court under his real name of John Shannon, had been left with the victims in the early hours of the morning at the home after others had gone to bed.
John Alford found fame in Grange Hill and London's Burning
|GETTY
He denied the accusations and claimed he had been the victim of a blackmail plot, however a jury at the Hertfordshire court found him guilty of all six charges he faced.
During the sentencing, Recorder Caroline Overton stated: "Your focus throughout has been on the impact to you and your family rather than the victims... this limits the extent to which mitigation can be applied," MailOnline reports.
Alford had spent a night at a pub with the father of a third girl on April 8, 2022, before going to the party at the property where the offences happened.
The court heard how Alford had given the teenage girls alcohol despite knowing they were under 16.
ITV London's Burning star John Alford jailed for sex assaults on teenagers | HERTFORDSHIRE POLICE/PA
The younger girl reported Alford had sex with her in the garden of the house as well as in a toilet.
He sexually touched the older girl while she was half asleep on a sofa at the house.
It was detailed during the trial that Alford had purchased £250 worth of food, alcohol and cigarettes in the early hours of the morning, including a bottle of vodka which the victims drank.
Police received a report about the offences from the 15-year-old's mother two days later.
LATEST DEVELOPMENTS
John Alford was sentenced to eight-and-a-half years in prison
|PA
Alford is best-known for his role as Billy Ray in the ITV drama London's Burning as well as Robbie Wright in BBC's Grange Hill.
Lawyer Chris White said in court: "John Shannon was fully aware of the girl's ages, yet he chose to exploit them – giving them alcohol and then committing sexual offences against them."
He went on to praise the victims for coming forward, with each of them having given evidence from behind screens at the trial.
The lawyer added: "Shannon's sentence today sends a clear message – we will pursue those who target young people for their own gratification."