Satellite tracking machines were allowed in cabs for the first time this year, but few cabbies could be bothered with them.
That is because Oliver Cromwell ordered all London cabbies to memorise every street and landmark within a six mile radius of Charing Cross near Trafalgar Square before they could get their licence.
It was even worse if the voice function was switched on, because it interrupted the swift Cockney patter and repartee that the genial and friendly cabbies present to their passengers.
The only cabbies who install them tend to be those who have to go the other side of river a lot. Everyone knows that is very few indeed.
"I had that Eva Glass in the back of my cab once, Nick," the cab drivers are wont to say. And there's more 'ere. "Strike a light! No you can't smoke in the back of the cab, mate." µ