As of Feb 2016, around 50% of cabs accepted cards. By October, all will be required to accept cards (with no surcharge). https://tfl.gov.uk/info-for/media/press

As of Feb 2016, around 50% of cabs accepted cards. By October, all will be required to accept cards (with no surcharge). https://tfl.gov.uk/info-for/media/press-releases/2016/february/card-payments-to-be-accepted-in-every-black-cab https://tfl.gov.uk/info-for/media/press-releases/2016/februa...