The baffling thing as kittylester says, is why a joint investigation of the relevant authorities hasn't resulted in raids on these factories. The news reports today suggest many of those employed on £3 an hour may be here illegally, living in over crowded poor housing conditions so working and living in close proximity with poor hygiene available. The same workers are trying to send money to their families, who stayed in their homeland.
My concern isn't the legal status of the workforce, its the exploitation of those people by 'respectable' business leaders. These 'employees' are in no position to involve Unite or any other union. Cause any trouble, don't work flat out and there's no job for you.
Where are Trading Standards, Health and Safety Executive etc? I read two such factories were closed yesterday.