A 14-year-old schoolgirl met a bus driver for sex sessions after he asked for her phone number when she was one of his passengers, a court heard this week.

The teenager swapped explicit text messages and late night phone calls with Michael Ndelemani, 36, from Gladstone Avenue, Feltham, and is said to have met him for a number of clandestine meetings over a three-week period.

A jury was told the married dad of three would pick the girl up in his car and drive to car parks in the Sunbury area where he would ask her to perform sex acts on him. He would also kiss and try to fondle the alleged victim and on one occasion tried to grope her friend who was sitting in the back, it was said.

Police were eventually called in after the girl's sister, who became concerned at her behaviour, found a notebook with details of her alleged exploits, it was alleged.

Ndelemani is standing trial at Guildford Crown Court where he denies two counts of sexual activity with a child and two counts of causing or inciting a child to engage in sexual activity between December 30 and January 17 last year with the first alleged victim. He also denies a further count of sexual activity with a child against the second girl.

An interview with the girl, who is now 16, given to police was played to the jury in which she told how she had been on a bus with her pal on New Year's Eve 2005 when Ndelemani was behind the wheel of the 235 service.

He asked for her phone number and the three met up when she claimed Ndelemani took them to Brentford on his bus and they went to a café where he bought them food.

She said they were soon regularly phoning and texting each other and when he wasn't working he would pick her up in his car and drive around Sunbury, Feltham and Twickenham to various parks. There she would perform sex acts on him.

Under cross examination by Christopher May, defending, the girl admitted she may have developed an infatuation' with Ndelemani and said the text messages she sent may have been a sexual fantasy.' But she denied making up stories' about the defendant and in tears insisted she had performed the sex acts on him.

The court heard that when Ndelemani was interviewed by police he admitted he knew the girls and had taken them to a restaurant and given the first girl money for a mobile phone top up. But he claimed there was no sexual contact.

The trial continues.