It's absolutely disgraceful when black cabs do this I agree. BUT this and has happened to me TWICE in 24 years in Camberwell and/or East Dulwich,,,I was very pissed off on both occasions and agree its a liberty etc etc but does it really happen that often? I'm a pretty frequent black cab user, am not the smartest of dressers and was often paralytic in my out in town at all hours times.