but I've been there twice before for my mother's vaccines.
It is always cowded due to it being a library and the amount of people going for vaccination, so I recommend going early. However, the process is always very organised, relatively fast when one keeps in mind the amount of people, which is a lot. Everyone of the staff we spoke to was polite and those applying the vaccine explained things well.
An advice I would give would be to take your NHS card with you as it speeds the process and makes it so that they can find you faster in the system. If you don't have it, al least take some form of ID card. It made things so much easier for us, because we have some weirdly spelled european surnames. Another advice would be to take someone with you, because you may get side effects. I was a little dizzy after the vaccine.