This from the Telegraph:
The head of a school sixth form engaged in a sex act with one of his pupils while driving a school minibus, a court heard today.
Andrew Riley, a married father-of-two, spoke to a colleague on a mobile phone as the 17-year-old girl performed a further sex act upon him, Preston Crown Court was told. Giving evidence today, the alleged victim also described how the teacher allegedly gave her cocaine during two nights they spent together in a Manchester hotel.
"I'd gone to the toilet and he'd put the cocaine out in lines on the desk that was in the hotel room," she said. "Then Andrew did a line or two."
When asked if she had taken any, she replied: "Yes."
Riley, of Wentworth Drive, Lancaster, denies two counts of an abuse of trust and sexual activity with a child and a single count of offering to supply cocaine between May and July 2005.
It is alleged the head of sixth form at Baines High School in Poulton, Lancs told his wife he was attending a parents evening in order to meet the girl.
Dennis Watson, prosecuting, read out pages of Yahoo Instant Messages recovered from the girl's computer.
One message from the girl referred to their alleged minibus encounter: "How funny is it that some year 12s will be sitting where we had sex and I can't believe you spoke to Tindle on the phone... I'm impressed."
The court heard that she sent him a topless picture of her over the internet, and he sent a video to her.
She told the court: "It was a video of him removing his boxers, from the front. I was showing my breasts while he was showing everything."
Mr Watson said he sent her a message saying: "Can you believe you have got a video of the head of your year getting his shorts off?"
The girl allegedly wrote back saying "Trust me", to which he replied: "I have to because you could get me locked up."
The jury heard that Riley repeatedly told the girl to delete the videos he had sent, and wrote: "If this relationship goes tits up, you could batter me."
After the girl went away to study at Oxford, the relationship cooled and she eventually showed her old school the email messages. The police were then called in.
Riley told officers he "emphatically denies" having sex with the teenager or supplying her with cocaine.
He did not deny spending nights in hotels with her, but denied any sexual activity took place, the court heard.