'Workers producing sportswear for Olympic sponsors Adidas, Nike and Puma are beaten, verbally abused, underpaid and overworked in Bangladeshi sweatshops, a shocking investigation has discovered.

Workers for all three companies had been physically abused. In one Puma supplier, two thirds of the workers interviewed had been beaten, slapped, pushed or had their hair pulled by their managers.

Women working for all Adidas and Nike factories reported sexual harassment and workers for all three companies had to work illegally long hours for less than the minimum wage. Some Adidas workers were paid as little as 9p an hour, with the average worker in all six factories investigated earning just 16p an hour.'

Read more: Olympic Brands Caught Up in Abuse Scandal