The series that turns hidden cameras on bad customer service this week goes under ground. Dylan Winter , armed with a miniature camera, rides the tube trains of London and finds out how London Underground tests its own staff using people called mystery passengers. He then takes his video evidence of surly service to London
Underground's management. They put the blame at the government's door, showing how, six years after the fire, King's Cross is literally falling apart for lack of funds.
Series producer David Dawson-Pick
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