Women are being sold into prostitution in modern day "slave auctions" at Britain's airports, it emerged yesterday. The illegal immigrants are sold to the highest bidder for up to £8,000 a time. They are then forced to work in brothels where they can earn up to £800 a day for their "owner". The chilling reality of human trafficking was spelled out yesterday by senior police officers at Scotland Yard. Detective Superintendent Mark Ponting, of the Metropolitan Police, said young women from all over the world are trafficked into Britain after being promised well-paid work in bars or cafes. But within...