I know I bang on about this a lot but there is a surprising number of people who are not aware of their vaccination history and may not be covered. If you're at all unsure, ask your doctors surgery to look at your records and find out if you have any missing that can be given as an adult. I was told I was covered by some by family (mmr, tetanus etc) but not others, it turned out the only one I've had in my life was tetanus.