Yes, the people who run London's public transport want to do away with the concept of paying by cash for a journey on a bus. They claim that less than 1% pay by this method at present but that it needs to be banned completely in order to save money. I suspect that the closure of TfL ticket offices and the removal of advance payment bus ticket machines will have been included in projected savings. TfL currently benefits by charging those who pay by cash a higher fare but has the loss of this surcharge been set against the "savings"? Saving money sounds like a good idea but who will be disadvantaged? Those who have forgotten or lost their Oystercard, those visiting London and those who need to make an unplanned journey will be denied a bus trip despite being able and willing to pay. TfL also claim that it will "remove delays" although, with so few people paying by cash now, it's hard to see that this would be significant. Or you may feel differently. Either way, the consultation questionnaire is available here: https://consultations.tfl.gov.uk/buses/cashless