Mauro Demetrio told the jury he was arrested after an officer told him he could smell cannabis and that he was driving in a suspicious manner. He alleges that once in the van a fat officer sat on him and that an attempt was made to strangle him.
The court heard a doctor found bruise marks around his neck when he examined Mr Demetrio at the police station.
More top news
£13 million pounds is being invested to help stop vulnerable young people being exploited by gangs who use them to sell drugs.
A drunk man who narrowly escaped death when he lay down between train tracks in Harlow has been given a 12-month community order.
A man from north London has been charged with the manslaughter of Louella Eve Fletcher-Michie, who died at the Bestival music festival.