Transport for London investigators go on an undercover sting in Ilford to catch a suspected female fare dodger who they believe has racked up more than £3,000 in unpaid fares on nearly 500 journeys by misusing a contactless payment card. At Wandsworth, South Western Railways revenue protection officer Sam deals with a woman travelling on a 16-25 rail card giving a discount she is not entitled to, and Ty spots a man lurking at the barriers without a ticket who appears to have a paper ticket yet claims he actually tapped in with his phone but that it's run out of battery. And at Waterloo a man is spotted hurdling over the barriers trying to escape without a ticket