About 40 per cent of journeys on London’s public transport network will be more expensive due to the limited impact of Mayor Sadiq Khan’s “fares freeze”, it can be revealed.It means that Transport for London’s income from fares will increase by up to £75m over the next 12 months, if travel returns to pre-pandemic levels – the bulk from more expensive Tube journeys.Mr Khan’s partial fares freeze – which leaves the cost of pay-as-you-go journeys on the Tube, London buses, the London Overground, Elizabeth line, DLR and Croydon tram unchanged until March next year – came into effect on Sunday.But because the “cap” on the cost of multiple pay-as-you-go journeys has increased, alongside a 4.9 per cent average increase in Travelcards, many passengers will end up paying more.