Hello, fellow nhs worker here…it’s not essential for us to have it but highly encouraged. They will vaccinate on site for you at any placement if you wish to have it- you would just book appointment via occupational health - over winter they do drop in flu vaccination clinics where you could have covid at same time if you wanted to. It is entirely your choice though, you will likely have to have an occupational health screening disclosing your vaccination history. They will insist you are upto date with hep B, rubella, BCG etc as far as I am aware.(not so much flu or covid vaccines) hope that helps ☺️