I did my intensive certificate course in February 2012 at SGI London. I was told by friends who had done the course that it would be a busy month, but very much worth it.
The course really gives you essential tools you need to pursue a career of teaching TEFL. The staff are extremely helpful, always had time to help and point you in the right direction.
After finishing the course I was recruited to teach at SGI Moscow. It's been great, and I've had a very interesting experience so far.
I would thoroughly recommend the course to anyone thinking of doing it.