They are not going. Maybe because of the repeated chanting of Protect the NHS instead of the NHS protects its patients.
This perverse reversal is on explicit display in your posts
Protect the NHS is a government slogan.
It's also common bloody sense that in a pandemic they want to reduce and adapt certain services (and yes I do have questions about how some these operational decisions were made, I've had some things changed and cancelled, no I'm not some NHS worshipper policing the pot banging).
Staying home and protecting the NHS isn't saying "don't go to A&E if you're having a heart attack". It's saying "don't go piss about having BBQs at friend's houses and day trips to the beach because we'd quite like the NHS not to be overwhelmed in order to be able to treat people".
For the NHS to protect its patients it needs people to avoid needless outings (for example the endless posts on here where people are defending going out for chocolate because they fancy some, or going to visit friends and family because they don't see the issue, or non-cohabiting couples living apart but still meeting up).
Unfortunately there's enough of the great British public who were told to avoid busy places and went off to beaches and tourist places the weekend before lockdown. Unfortunately there's people so stupid and selfish that they are scrambling to find ways they don't have to follow lockdown. That's why it's had to be shortened to 'stay home'.
The NHS was able to protect and care for DC precisely because the majority of people are following lockdown. Following lockdown rules doesn't mean don't get medical help.