Once I'd been let in, the nurse led me through the waiting room, which now has perspex screens separating the seating areas and surrounding the receptionist's counter. The injection itself took a minute or two and then I was ushered out by a back door.
All very efficient and of course we were all wearing masks throughout.
I was also offered a pneumonia jab, which apprently is a once in a lifetime thing. I declined for now because I think it's best to allow one's body to deal with one thing at a time, but I'll do a bit of research and see whether it would be a good thing to have.