I'm 18 and will be starting A levels this year, But I'm worried that's too old?

Is 18 a bit too old to start A levels? I'm worried because I'll be sitting in a class full of 16 year olds, feeling a bit out of place and everything. How many people 18+ would you say our in your normal class? Can anyone comfort me on this choice? By 2012 when I leave all my freinds would of completed two years of uni, and I would hopefully of just started! I need to stop worrying about this...

PLEASE, get your grammar right, most exams with anything written in will have marks for QWC (Quality of Written Communication,) you dont want to drop easy marks else you'll fail before you've begun!!

No, you're never too old IMHO, as long as you have the will to learn, then go for it. I don't feel out of place, I am happy being my own person, and bugger what other people think; your life, your choices. Good luck, and enjoy your A-levels!!