[overcast]

My experience a couple years ago, is that the cab driver WOULD NOT accept anything but cash. In fact he went as far as to say most do not, and I was stuck driving around looking for an ATM on my way to Heathrow Express.

[switch007]

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/februa...

[overcast]

Well that is much more reasonable. I must have been there just before it.