Re: Still relevant?
I think there are a number of false assumptions in there and also ignorance of the regulatory framework a lot of these orgs work in.
NHS NSS are the lead customer here and while I've never worked directly with NHS Scotland I have had to make arrangements with them for cross-border stuff and am very familiar with NHS England's requirements.
To begin with we have the unsupported assertion that it's the internet and cloud that matter. Forget the hype, a lot of these sectors are highly insular and dependent on central services. You can bet the few approved commercial providers have their own dedicated WAN links as specialist providers. EMIS for GP practices comes to mind. General off the shelf cloudy providers - not so much.
Access to those central systems is itself highly regulated on both security and legal grounds. I can tell you from experience with NHS England if you proposed connecting them to the Internet they will simply tell you it's not permitted. Argue about encryption or VPNs until you are blue in the face - it's not that they don't know about them, they'll tell you it's not permitted and the conversation stops there.
Then consider the underlying technology used. The article doesn't go into detail but mention of Vodafone and Virgin instantly suggests to me the solution proposed. There are two big national MPLS networks. BT own one. Vodafone the other one, thanks to buying Cable and Wireless' UK network a few years ago. Virgin are presumably providing last mile links to small branches. You end up with a network that looks a lot like a commercial ISP but is secure and with specified bandwidth between nodes.
This in turn though leads us to the quality of service arguments. I recall a report here a few years ago about an IP-connected remote controlled robotic surgeon for situations where an appropriate surgeon available in the locality. Cue the naysayers here that know no better saying how inappropriate the Internet is for something like that, because, you know, there are unpredictable delays and latency. Run your own WAN and you get in touch with Vodafone and say "we need Xmbps between these two sites" and a few hours later - hell, probably minutes later if you're willing to pay for it - a path will have been set up and you're told, "Right, you have Xmbps and no more than Yms latency". Those are not aspirational "up to" figures but guaranteed metrics. How do you achieve the same thing over the public Internet?