Transport for London investigator Lisa pursues a suspected fare evader owing the network almost £2,000 in unpaid fares. At Waterloo Station, revenue protection officers target short fares and the misuse of discount cards.

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Transport for London investigators Lisa, Holly and Greg are at Seven Kings Station in north-east London to hunt for a suspected prolific fare evader owing the network almost £4,000 in unpaid fares. Meanwhile, Nottingham Express Transit revenue protection agents conduct a plain-clothes operation on the network, joined by the police as part of a joint initiative aimed at reducing fare evasion and antisocial behaviour.

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In London, investigators hunt for a woman thought to owe more than £2,300 in unpaid fares, and attempt to stop her at Chadwell Heath station to question her about 'short faring'. On TfL buses in London, there's a tip-off from a driver about a potential fare dodger, but before she can issue a penalty fare the woman takes flight and exits the bus.

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In north London, TfL investigators prepare to track down a suspected serial fare evader accused of using a blocked card to rack up more than £2,000 in unpaid Elizabeth line fares in just a month. In Nottingham, undercover tram officers come face to face with a known aggressive male, with the confrontation captured on bodycam. On TfL buses, inspectors crack down on contactless payment misuse as they intercept a woman using a disabled person's freedom pass.

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Investigators Joey, Ela and new recruit Weronika track a suspect believed to have avoided more than £1,400 in fares, using travel data and CCTV to intercept him at Ilford Station. TfL bus inspectors Matt, Dija and Megan tackle concession card misuse, including a passenger unable to prove eligibility for free travel, while Nottingham tram revenue protection officers Ray and Red confront repeat fare dodgers determined to avoid paying for their journeys.

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After months of tracking his movements, Transport for London investigator Lisa trails a suspected fare evader thought to owe TfL more than £2,500. In Nottingham, revenue protection agent Michael from Nottingham Express Transit is forced to hold the tram when a group of college students without tickets refuse to get off, causing a fellow passenger to take matters into his own hands.

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