I hailed a cab during the big tube strike a few years back. 60 GBP got me, not to the airport, but the DLR (automated trains; no drivers). We had to stop by an ATM since he didn't take cards. Uber had surge pricing at the time due to the strike, so I'm not really sure which one would have been worse.

My concern is more about the precedent that this sets for other cities to follow suit.