I came here in September 2009 for my Master Degree.
After completing that, I applied for PSW which I got in June 2011.

Now I am in Tier 2 which expires in July 2017.

I read that to apply for ILR, one should be under 'work permit' category for 5 years.

So does the PSW also comes under 'work permit' category?
If not, then it should be okay to apply in 2016 for ILR. Am I right?

Kind Regards