I didn't have much evidence with my Common law, I just sent a joint phone bill, my ID and his driver license with the same address, my bank account and his bank account with the same address and lots of photos and 2 letters from family and friends, but after they asked me for more proof cohabitation documents, as I had no more to send, I sent more letters from friends and family and asked my landlord to write a letter saying that I lived in the Condor with my boyfriend over a year ago and last tuesday I had a landing interview and got my PR!