I have no doubt that it's an extremely complicated mixture of 100s of systems, but anyone who has lived here knows how terrible it is. GP surgery's have for years had to send paper files across to new practices when a patient moves. The new NHS app is great, but I can see from my history that > 90% is missing.
Another great example of how good the NHS is at this, is the fact that nurses & doctors would have to scroll down a combo list without any typeahead to pick a medication, which would be in an A-Z list of every medication ever.
So, closing the circle, is there a reason to bring in a company that hires people at and above our level of competence, who have the expertise to implement a system to bring the NHS out of the dark ages of IT? Yes. There are many.
There will always be concerns about data, about security, but I'd much rather data be in the hands of a corporation that doesn't leak it than an unknown company getting billions in contracts, building software worse than someone with a $20 Claude extension, and then leaking it to hackers.
Just my 2p