An Afghan migrant accused of raping an autistic schoolgirl in a train toilet 'used her to satisfy himself', a court has heard.

Baryalai Rahimi and Mirebadurahman Sadat are on trial for attacking the runaway 14-year-old on a London-bound service from Kent on February 5 this year.

Jurors at Inner London Crown Court earlier heard that Rahimi raped the girl three times in the train toilets, while Sadat, 29, is said to have assaulted the teenager twice. 

Both defendants deny a total of 20 charges, including multiple counts of sexual activity with a child.

Rahimi, 25, has claimed the girl followed him around the train and that he found it hard to get rid of her. He said she told him that she was 17 and was going to a party.

In his closing speech, prosecutor Richard Witcombe said: '[Rahimi] used her to satisfy himself. He did nothing at all to push back, he did nothing to dissuade her.

'You wouldn't choose to be with someone who was utterly annoying. 

'If they had done something against your will, you wouldn't choose to remain and continue in their company. His desire to be shot of her is an absolute nonsense.'

Sebastian Cox, defending Rahimi, told the jury that they must treat his client in the same way that they would a defendant that was born in the UK.

'You must judge Mr Rahimi, an Afghan man who has come to this country precisely the same as someone who was born in the United Kingdom. Lady Justice is blind.'

Referring to CCTV footage from the train, Mr Cox said: 'She is holding his hand, she is leading him on to the train.'

When the girl was cross-examined in court she told the jury that she had not led Rahimi on to the train.

'That wasn't the truth, members of the jury, that was not the truth,' said Mr Cox.

He made the point that Rahimi could not have known that the teenager had autism and ADHD. He said: 'You don't walk around with your diagnosis on your forehead. There is no evidence that she said to them, "I am autistic and I have ADHD".'

Mr Cox told the jury not to focus too much on the girl's height.

'Height is not determinative of age. Everyone grows at different rates when they are teenagers,' he said.  'We all might have family members who are very short but still very much over 18.'

Mr Cox reminded the jury that five months before the alleged rape the complainant had told another man that she was 17 rather than 14.

'He could not have known that she told someone else that she was 17. That is a specific age,' he said.  'It is the same, exactly the same as what we know she did five months prior.

'That is a coincidence you are really going to have to grapple with when considering whether there is some doubt.

'The prosecution's silence on this issue is deafening. What can you say about it?'

Rahimi, of Southall, west London, denies three counts of rape, two of sexual assault, one of assault by penetration and six alternative counts of sexual activity with a child.

Sadat, of Cricklewood, north-west London, denies two counts of assault by penetration, two of causing a person to engage in sexual activity without consent and four alternative counts of sexual activity with a child.

The trial continues.