Teens seeking sex from raunchy escorts can go a safe bet by talking to their parents, a teacher has said.

A former English teacher at St Annes High School was jailed for 30 months after she told students in her classroom that she could give oral sex to a man for money and not get HIV.

Jenny Oswald, 30, conducted ‘easily compromising’ meetings with the men after telling them she had did not have the virus.

But the school eventually caught on to Oswald’s behaviour and the offences were reported to the police.

Oswald even managed to keep the porn-laced videos she produced for the clients on her mobile phone.

One video showed Oswald going for a ‘full on blow job’ with an unidentified man, one in which she told another, she liked to have both hands on a client and she ‘hoped the blood went out’ on her cheeks, at Manchester Crown Court.

Oswald, of Heywood, Greater Manchester, was jailed for 30 months on Friday after admitting 12 counts of causing a child under 16 to watch material likely to be harmful to their health.

Her offences came to light after her former lover at the school, Jason Mervin, claimed she secretly filmed herself performing a sex act on him with a webcam phone.

The court heard Oswald was arrested in February, 2015, as police seized her computer hard drive.

Two weeks later she was sacked from her job as a teacher, but Oswald continued to use her teaching credentials to use dating sites and chatrooms to find clients.

Prosecutor Ray Smith said that Oswald, whose father is a senior figure in the England Rugby Union, met up with her boyfriend at Asda with his bags in April, 2015.

She went for a ‘full on blow job’ with an unidentified man, one in which she told another, she liked to have both hands on a client and she ‘hoped the blood went out’ on her cheeks, at Manchester Crown Court

Oswald was later told that the IT department had hacked into her emails and took down the porn videos.

But while police investigated, Oswald was arrested again and carried out two more sex sessions, with two further clients.

Even after admitting four of the charges, she admitted a further offence, though said she was now ‘ashamed’ of her actions.

‘These acts were of your own will and was your own doing. You knew what you were doing was wrong,’ Judge Mark Brown told Oswald.

‘You deceived your students by having sex with the men and told them that you were not positive.

‘You were aware that this was wrong and the students in your classes believed you when you told them this.’

Clients paid between £50 and £200 for the visits which included about 45-60 minutes of sex and involved five hours of touching.

Oswald – who had 16 months of her sentence suspended for 18 months – had a baby son when she was 21.

But Oswald wanted to find extra cash because she was renting a £300-a-month flat with no washer or dryer and had to find somewhere to live after her father moved away.

But the Cumbrian woman’s attempts to pass herself off as an escort soon raised suspicions when one young client referred back to the ‘ping’ pings she regularly sent on her mobile.