Name given to unlicensed mini-cabs in London. Often found hanging around pubs and clubs in the early hours of the morning. Not as safe as the official London cab, but a lot cheaper. Standard practice that the passenger has to give directions. Also usual for the fare to be agreed in advance only for driver or passenger (usually both) to dispute said fare when being dropped off.
Fuck it, we've missed the night bus, let's sort out a Lagos cab.