Pros:
Many things to do
Lots of events for all ages
City life
Good food :P
Landmarks
Lots of teenage/20s type activities
Clubbing
Shopping
Easy access by train, tube and bus to everywhere
Cons:
Very crowded and busy
Waiting in line for ages
Some things can be quite pricey
I'm sure there are many more of both, but these are the only ones I could think of right now!
Hope I helped :)
You can't do that at 17yrs old, you would have to wait until you are 18yrs old and then apply for a working holiday visa which allows you up to 24 months 50/50 work/holiday and is non immigration once in a lifetime experience
Educationally, it wouldn't make sense. 16-18 year olds in the UK study towards a 2-year course called A-levels; while you can do just the first year to get AS grades, these won't be worth anything anywhere.
If it effects your formal education it's a daft idea. Finish your compulsory education, then, if you want to experience living in the UK, either apply for university in the UK (if you can afford it) or a Youth Mobility visa under the working holiday scheme.
sounds like an unwise move , there is no "artistic culture" in london any more than any city