Yes, some interesting insights in the TaxiPoint piece.
However - and this is one reason I'm not a huge fan

- is that if the move from nightclubs to suburban house parties etc has heralded a shift from rank hires to app-bookings, then presumably there's an accompanying shift from HC work to PH?
And, of course, if that's the case then presumably there's also been a shift from rank work to good old phone bookings (which would probably benefit PH in the capital more than HCs, although in the sticks the distribution of more phone bookings between HCs and PHVs would be more mixed, I'd guess?)

(And, since TaxiPoint supposedly specialises in Glasgow

, maybe the huge long-term drop in HC
drivers there [as opposed to HC
vehicles, the numbers of which are of course distorted because of the long-term cap], illustrates this trend on a longer-term basis, as street work has shifted towards pre-booking, and the trend towards pre-booking has also been accelerated by apps, and the Uber app in particular.
So it's maybe a longer-term trend towards pre-booking rather than rank and hail work, accelerated by
automated pre-booking as opposed to phone booking. And, of course, going back longer still, no doubt the whole mobile phone thing encouraged pre-booking - what did we do before mobile phones? Not quite so easy to book a car via a phone in a pub or finding a working telephone box...
Which in turn points to another big TaxiPoint shortcoming - it's either HCs or app-only providers (Uber in particular, obviously, but also the HC apps), and it's as if the legacy London PH sector (aka minicabs) didn't exist.
Only in St Andrews (I do exaggerate) could you have a serious discussion about the whole sector without mentioning PHVs
(Strictly speaking, we have mixed fleets, and there's a smattering of PHVs, but they're just tacked on to the HC dispatch offices, basically. Of course, there's a bigger PH sector doing golf and airport works etc, but that's more of a specialist industry rather than the day-to-day 'taxi' work.)