IT is "inconceivable" a man did not know the girl he was having sex with was 14, the Old Bailey heard this afternoon.

Defendant Mohammed Hussain told the jury he had sex with the girl about five times from early 2011 but said she had told him she was 17.

Hussain is one of nine men to deny involvement in a child sex exploitation ring in Oxford. He faces three charges of sexual activity with a child.

The 24-year-old today told the jury he had sex with the complainant known as Girl 5 in Marsh Park, the Nanford Guest House, and in the bathroom at a Regent Street house party.

But he denied it when prosecutor Neil Moore said: "You had sex with her in these places because you knew perfectly well she was 14."

Hussain also denied knowing the teen lived in a children's home.

Yet Mr Moore said he must have known how old she was given the time they spent together.

He said: "It's absolutely inconceivable that you knew this girl so well and for so long and didn't know she was 14."

But Hussain said the girl looked 18 and would drink and smoke.

The court also heard child sex accused Zeeshan Ahmed will not take the witness stand to defend himself.

The trial is due to hear the defence case of the ninth defendant Bilial Ahmed tomorrow.

Nine defendants deny 66 charges. They are:
-Kamar Jamil, 27, of Aldrich Road, Summertown, Oxford, denies five rapes, two charges of conspiracy to rape, one of arranging or facilitating child prostitution, and one of trafficking for sexual exploitation.
-Akhtar Dogar, 32, of Tawney Street, East Oxford, denies five rapes, three charges of conspiracy to rape, two of arranging or facilitating child prostitution, and trafficking for sexual exploitation.
-Anjum Dogar, 31, of Tawney Street, East Oxford, denies three rapes, three charges of conspiracy to rape, two of arranging or facilitating child prostitution, and trafficking for sexual exploitation.
-Assad Hussain, 32, of Ashhurst Way, Rose Hill, Oxford, denies rape and two charges of sexual activity with a child.
-Mohammed Karrar, 38, of Kames Close, Cowley, denies seven rapes, four charges of conspiracy to rape, two of trafficking for sexual exploitation, two of arranging or facilitating child prostitution, serious sexual assault, conspiracy to engage in sexual activity with a child, using an instrument to procure a miscarriage, and supplying a Class A drug to another.
-Bassam Karrar, 33, of Hundred Acres Close, Cowley, denies three rapes, three charges of conspiracy to rape, two charges of arranging or facilitating child prostitution, and trafficking for sexual exploitation.
-Mohammed Hussain, 24, of Horspath Road, Cowley, Oxford, denies three charges of sexual activity with a child.
-Zeeshan Ahmed, 27, of Palmer Road, Wood Farm, Oxford, denies two charges of sexual activity with a child.
-Bilal Ahmed, 26, of Suffolk Road, Maidenhead, denies sexual activity with a child.