Teaching English inside South Korea

Can anybody tell me about teaching foreign language inside another country, specifically Asia?

I'm a British 18 year old female. I'm fairly intelligent and I speak and write English very well :)
For the last few years I haven't really had any direction in my life but last year I think I've found something that really interests me. I decided to learn another language a few months and after much deliberation I settled on Korean.
I've recently become really interested in the prospect of teaching English over there and I'd like to know what kind of requirements would be expected?

I speak proper English free of any regional dialect, I am in possesion of one English GSCE which is an A. I don't have any A-levels after deciding to collect a few more GCSE's once I hit college and I don't really have any intention of going to university, I know it's not actually a requirement to teach English in a foreign country.
Since I started learning Korean late last year I can hold basic conversation and write fairly well, I expect to be further advanced later this year.
I'm not particularly interested in making loads of money, I just want to get out of the UK for good, travel, visit Korea and teach :)

Opinions, experiences, tips? All is welcome and very much appreciated :D

First of all, in all your dealings with teaching English in South Korea, you should err on the side of caution

http://www.lilith-ezine.com/articles/politics/Dont-Teach-in-South-Korea.html