I have a theory, which might be a bit silly, that being a scientist is really quite a natural thing for human beings to do. We’re all quite curious and like investigating things, which is all science is.
So I could say I’ve been a scientist since I was born!
But I’ve only really been /paid/ to do science for the last year… Before that I had to pay other people to let me do it!
I decided to do science probably when I did my A levels. I had a very good physics teacher that inspired me and gave me a lot of freedom to look into interesting stuff.