A TEACHER grabbed her 16-year-old pupil's penis on a plane before she led him into the toilet for sex, a court heard.

Eleanor Wilson was 26 when she allegedly romped with the teen during an overnight flight from London's Heathrow Airport to Africa in August 2015.

8 Eleanor Wilson outside Bristol Crown Court where she is on trial accused of sexual activity with a pupil Credit: PA:Press Association

Wilson, now 29, from Dursley, Gloucestershire, has pleaded not guilty to four charges of abuse of position and sexual activity with a child.

Bristol Crown Court heard how she was perched on one leg in the cramped toilet while they had full intercourse.

Their relationship was exposed when a jealous friend of the victim tried to blackmail her into having sex with him.

In a police interview played to the court, the boy said: "She ran her hand around my penis. I was wearing jogging bottoms. I carried on and then she slid her hand down my boxers, there was a little foreplay.

8 Bristol Crown Court heard how Wilson was deemed a bright and capable teacher Credit: facebook

"That went on for a bit. Then she proceeded to go into the toilet. She called me in. I walked in closed the door and locked the door.

"We proceeded to kissing and touching and at this point she had my hand down her boxers.

"From there, she pulled down my jogging bottoms and she was placed on her knees.

"My back was against the wall and she was knelt in front of me. Then when she stood up my trousers were down anyway and she pulled her trousers down.

"It became difficult it wasn't working - she's very tall."

After they had full sex the boy recalls having a "very brief conversation" with her on how they were going to get out of the toilet.

8 The sordid fling was exposed when a jealous friend of the victim tried to blackmail Wilson into having sex with him Credit: Facebook/Elanor Wilson

8 Wilson, a science teacher and head of Key Stage Four at the school, was described as a 'risk taker' Credit: facebook

8 Bristol Crown Court heard how she was perched on one leg in the cramped toilet while they had full intercourse

Long after the trip, the pair exchanged numbers and even had a reunion meal at a Nando's restaurant, where he gave her flowers and chocolate.

Virginia Cornwall, prosecuting, told the court how the pair became close during the outdoor camping holiday to Africa.

They would 'pair up' for activities and stay up late talking after other teachers and pupils had gone to bed, which led to an "erosion of boundaries".

A month later, at school, Wilson told the boy that she was pregnant, the court heard.

8 Wilson allegedly performed foreplay on the boy in their plane seats and then led him into the toilet where she gave him oral sex Credit: PA:Press Association

8 Wilson had a boyfriend when she allegedly had sex with her 16-year-old pupil in August 2015 Credit: PA:Press Association

8 Wilson has pleaded not guilty to four charges of abuse of position and sexual activity with a child Credit: SWNS:South West News Service

The relationship was exposed when another pupil tried to blackmail her.

Ms Cornwall said: "Another pupil became aware of what had happened and started emailing Ms Wilson threatening to expose her unless she in turn said she would have sex with him.

"She engaged with this blackmailer. Instead of going immediately to a superior she tried to deal with it herself.

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Ms Cornwall said: "She was a woman having a clandestine relationship with a boy.

"She is a risk taker. She does accept there was inappropriate conduct outside of school, but nothing sexual."

She added: "He is a young man who has no motive for making all this up."

The boy's dad reportedly thought Wilson was supporting his son, who had just broken up with his girlfriend.

Wilson, a physics teacher, was head of Key Stage Four at a Bristol secondary school when the alleged offences took place three years ago.

Wilson has been struck off on recommendation from the National College for Teaching and Leadership (NCTL).

The trial continues.