At Vauxhall, revenue protection officers from South Western Railway are involved in a major sting operation which prompts an investigation into fraud going back seven months. A lady is stopped using a half-price ticket bought with a Job Centre Plus discount card which she doesn't have. At Southampton, Spencer is on high alert after claims that two young women who push through the barriers are being abusive and are trying to travel for free. At Waterloo Harry takes on tailgaters and the abuse of half-price child tickets at half term. And two newly trained recruits are on the Weymouth to London line - a route notorious for fare dodgers.

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