Series 3

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.

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.

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.

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.

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.