I've used Uber and Hailo as a passenger, and rarely get a taxi any other way now. Multiple reasons - record of driver details, no cash needed, record of history of journeys.
My new favourite thing about it is, sending the babysitter home in one (thanks mum!) - its automatically paid out of my account; no arguing over who pays; and i even get an email to say she was dropped off at a certain location ... in case she takes a sneaky trip to Leeson St (joke!)
its fab
#no connection to either company