NHS England Covid app outage shows problems of single centralised system

Analysis: app falling offline caused frustrated users to be turned away from flights and venues

It's always annoying if your phone battery dies while you're travelling - but it's even worse if malfunctioning technology means you can't even begin your trip.

Wednesday's outage of the NHS app for England left frustrated users unable to prove their Covid vaccination status at airport check-ins, meaning many were unable to board flights. Others were turned away from venues that require evidence that people have been double-jabbed.