18 to buy it, 16 to drink it in a pub with a meal, and you have to be at least 5 to drink it at home.
Dunno where I got 14 from, then. And a minimum age of five sounds entirely unreasonable! What about giving booze to babies to stop them crying?

Can you go explain in-depth your experience? I am considering joining up to learn a trade too.
It was mostly positive, except for a couple of things: first is that I was really too young, and... well, that was probably it, really. I think life was a bit miserable because my staff sergeant was one of the "bitter and insecure" types I mentioned and picked on me a lot, but being a bit older would've probably ameliorated most of that. So make sure you have your life completely together before enlisting otherwise it could be problematic.
The other thing is that I was advised to enlist as an officer, advice that I ignored, which probably wasn't such a good idea in hindsight.
In terms of what I did, I really only got as far as doing the first stage of basic training, but aside from the aforementioned staff sergeant I had a thoroughly good time. It certainly got my fitness together, and I learnt all sorts of useful odds and sods that are still good to know just for day-to-day life ("enlist now and learn the martial art of ironing!") 6:30am starts were hard to get used to, but swimming in the Atlantic on a cold November morning was invigorating! And the food was invariably excellent. The people I was with were mostly a good bunch, and pretty much ensured that those who weren't didn't become a problem. The shirts are every bit as itchy as they say, though.
Oh, and I was an absolutely dreadful shot with a rifle, though I was actually pretty good with the unaffectionately-named "small metal gun" (the Sterling SMG, better known these days as the Imperials' blaster in Star Wars!)