Cabs will be hybrid and electric, Sadiq Khan (Mayor) said there will be a scrappage compensation scheme as now being practised by some car manufacturers, up to £6000 for diesel cars built prior 2006, and Khan is seeking additional compensation from Govt coffers for Black Cab owners. I would have thought it would not beyond the wit of some entrepaneur to set up a re-engining facility for Black Cabs as new ones are currently running at £50,000.
Plenty of recharging points in London and no doubt there would be more installed on all taxi rank vicinities at all major rail stations