Our council won't let Uber operate in this area so we still have to pay extortionate taxi fares. However, I used Uber on holiday recently and was pretty pleased with it, all bar one trip. It was a 5:15am trip to a foreign airport and the pre-booked Uber didn't turn up. I was panicking about missing our flight but I rebooked and thankfully a young chap arrived a few minutes later. He said he hadn't been able to sleep so when he saw my request he jumped into his car to meet us.
We use Ubers all the time. We started in London, used them in Brighton and we now have just 1 in the town where I live. I find it useful that I can book and pay for a taxi for someone else, I have the name of the driver and his registration.
I had my first experience of booking an Uber today. As they are not licensed in our area, I had never bothered to instal the app, but was pleasantly surprised . A fair estimate of the fare in advance (Trafford Centre to the Royal Exchange theatre, Manchester) the car was there within 5 minutes, a spotlessly clean a/c hybrid car, helpful and friendly driver and very reasonable price for the distance. The DDs all use Uber all the time over black cabs or mini cabs and I wonder if others have had the same positive experience?