Fare Dodgers: At War with the Law (2019) : 2x3

Investigators Rich and Greg go on the look-out for a fare dodger thought to be scamming Transport for London for over a year, racking up more than £5,000 in unpaid fares. At Waterloo, South Western Railway revenue protection officer Sam faces a tense situation with a man caught without a valid ticket who is more focused on finding a toilet than co-operating