She added: “If you maintain staff numbers you stand a better chance of reducing evasion and the staff pay for themselves. If you cut staff and fare evasions rise it’s a false economy.”
Steve Burton, TfL’s director of enforcement and on-street operations, said: “Fare evasion across our network has continued to go down every year, against rising passenger numbers, and on London Underground represents less than one per cent of all passenger journeys.
“Our revenue control inspectors work in partnership with our policing partners to not only check tickets on trains and at stations, but also to carry out intelligence and data led operations to stamp out fare evasion on our network.
“We take fare evasion of any kind extremely seriously and communicate the consequences of being caught without a valid ticket.
“For every journey, customers must have a valid ticket or tap in and out using Oyster or a contactless payment card – even if the ticket barriers are open.
“If customers do not tap in or out then they will be charged a maximum fare for the journey.”