The London timeline is 5-7 months, but from what I hear the applications received from Islamabad are not completed in London, but merely a part of the application is, and then it's sent back to Pakistan.
So your timeline should be the same as before.
Someone correct me if I'm wrong
It seems that the London VO is doing part of the processing, but the file will get back to Islamabad. See here http://www.canadavisa.com/canada-immigration-discussion-board/-t182802.0.html
oh thats sad as Pakistan time lines are 32 months. Is it good to apply student visa , i want to study there too.
But i heard chances of rejection are more if you have already sponsored.