A couple of months ago, I met a brilliant scientist[1][2] who runs a space startup in India that specializes in brokering deals to launch non Indian space payload on ISRO's launch vehicles. Her company is called Earth2Orbit[3], although I am not sure whether this deal was brokered by them.

[1] http://travel.cnn.com/mumbai/susmita-mohanty-indias-own-moon...

[2] http://www.earth2orbit.com/people/people.html

[3] http://www.earth2orbit.com/index.html