Thankyou! Been checking this almost non-stop for replies. Yeah I did hear that about a CELTA, I would possibly like to make a career out of it but perhaps that is a qualification to get after uni as I do plan on returning next year to get a BA, so I'm now leaning more towards a course with TEFL England but am unsure as to how successful/respectable they are? I know their courses have accreditation and they have an online job centre specifically for those who take their courses - I'll have to do further research on their track record.
I'm quite open about where I want to work, although Asia does have particular appeal to me ( Thailand, Vietnam, Japan etc. )
Edit - The other thing I worry about is just how likely it is that I will be able to actually find and secure a teaching job abroad with just a TEFL qualification, I know a lot of the 'better' jobs ask for those with a BA. The internet makes it seem like a breeze and that there's jobs all over to be had as long as you have a TEFL qualification and a passion for teaching, but is this truly the case?