Hi Ashley,
I taught in London for 3 years with 2 different agencies before starting Classroom Canada. I write a blog to help people like you understand more about teaching in England regardless of which agency you are with. I think you'll find most of your questions are answered in there -
http://www.classroomcanada.blogspot.com. Since you're already with Timeplan, please don't see this as an advertisement to work with us, but more to help you understand
all the aspects to your move abroad from a Canadian perspective. We also don't do much work in Kent and focus more on Central London.
Also, our teachers now have a blog -
http://www.classroomcanadateachers.blogspot.com.
Networking is the best thing to do right now while you are still in Canada.
Good luck in your research & in your teaching in England next year!
Cheers,
Victoria Westcott