I circulated your ideas to the SCATA committee with a link to your post above. I'll copy any replies here so that we can keep the discussion going.
No doubt the NHS would want to know what financial benefits the project would bring before committing any funding to it. These benefits might be difficult to quantify
In terms of design, deployment and support, SCATA can certainly advise on that. Whatever technical solution you opt for, there will be recurring costs so a source of ongoing funding needs to be identified. If not the NHS, then you'd be looking at either charitable funding or some other business model e.g. Google Ads.
Personally I think it's a great idea. Have you thought about support from the OAA ?