I disagree with most of what you've written there, Ken. I do most of my work from working class areas and I've never encountered any serious issues. The working classes were always the bread and butter of night work, the middle/upper classes generally don't go down the local seven nights a week. Students tend to be pissed (hence relatively messy) on their way to the pub/disco. Fortunately, I don't work late enough on student nights to witness the state they are in going home. With mytaxi I actually now serve a good few regulars in working class areas that I wouldn't necessarily stop for on the street (hooded young lads, etc) all of whom have proved to be perfectly decent folk. Furthermore the working classes generally tip and would be able to divide 24 by 3 without the aid of a calculator in the unlikely event that they found a need to do so.
Having spoken with Richie Cummins a few times over the last couple of years I reckon Flag is geared for success. Whatever about having ex-Hail0 enforcers in the office, it has forged some seriously impressive alliances. As far as getting value for it's investment goes it's streets ahead of Whistle , Hail0, Uber and mytaxi combined.