Insider view
I worked for NHS England when the app store was first launched and was involved in the original launch - from what I saw the whole on boarding process of apps was done very late in the day (in time for that year's Innovation Expo, not based on the time that was actually needed to review every app that was submitted) so very rushed, lots of paperwork but from what I can remember very little need to submit any clinical evidence. I don't know if there was anyone overseeing the clinical evidence of the apps they were on boarding and it's interesting that about a year after launch the NHS stopped talking about the library entirely and essentially buried it. Since then a lot more apps have been added but I've noticed none of them seem to have the level of detail that was required for the first apps to be added.
It will be very interesting to see what happens next - there has been talk of NICE taking it over, accreditation, kite marking etc..