As far as I'm aware, you have to go through teacher training college, which takes 3-5 years the last time I enquired.
Also, in case your not aware, English kids are not like Filipino's, they are violent, abusive, & disrespectful, and the teacher has ZERO power to control them. The law in this country is with the child 100%
You can contact these sites to discover more, they'll give you some nice spin on the above
http://www.collegeboard.com/springboard/index.html
http://www.ucsm.ac.uk/courses/education/index.php
http://www.dns-tvind.dk/default.asp