Posted: Jun 03, 2019 12:57 pm
Not the licenced black cab drivers (that is drivers who drive black cabs not black drivers of cabs), who are the only ones required to memorise thousands of London routes. They are overwhelmingly white.
You are thinking of minicabs, which are mostly driven by Pakistanis, using satnav systems and overly loud Pakistani music playing on the stereo occasionally drowned out by family arguments conducted by mobile phone.