iPhone App Review: Get Taxi

The challenge: I needed to get to Tower Bridge Millennium Pier by 5am this morning for a London at Dawn photo walk.  In order to do this, I would need to leave home at approximately 4am and there are no trains or buses leaving from my area at that time of the morning. I could drive but I am not the happiest driver at the best of times and I certainly do not function well without my beauty sleep