Not the whole NHS - yet
It's interesting that either by chance or design only certain trusts and practices have been affected so far.
I've got nothing better to do so I'll check on Monday morning if my dentist needs any help. He is my longest relationship with any professional and he does love his new tech without understanding IT. I doubt it is appropriate to offer my local hospitals as their data is more sensitive, but if any of you work for established IT companies with the relevant expertise then perhaps suggest offering your help for free to your local NHS trusts. It's the right thing to do and you can sell it to your boss as great publicity.