I applied and got approved same day.
Interview is not difficult and prior to the call I chatted with my AM on AIM, so you can basically anticipate all your response there, you can take more time to respond and put it in a better English etc...
After that they would still require a call, but they might be prepared that your English is not perfect and they would have gotten most of the answers they are looking for on AIM first.
Not to say that the call will be a formality, but that way the process might be simplified.
I may speak with my AM if you like and see what she thinks about it.
Just let me know