Associate
I did an advanced apprenticeship which i started when i was 26, i was surprised to find the average age was about 22, only 1 or 2 16/17 yr olds. I wasn't the oldest either! You might find an employer prefers people around your age as they have (slightly!) more maturity.
). At 21 you'll bring a bit more life experience / maturity into the apprenticeship I would've thought, and hopefully get more out of it because of that
