no one can probably say for sure, but my guess is that CIC allocates files to specific VO's under specific conditions. A lot of people working in the middle east have their files sent to London (based on stats from myimmitracker). London VO has a huge backlog and also has a slow processing speed.does any body know what determines which visa office your application goes to and why london visa office seem to keep people waiting longer than other visa offices.
I have read about people changing their country of residence just to avoid getting to London VO and it worked.
One can only hope that London VO gets some additional resources to clear their backlog quickly. My file has been lying there unopened for 2 months now but a lot of people have been waiting for more than 6 months so I cant complain...