Bike fit / correct riding position

I have some pain in my left knee, along the outside of the joint towards the back of the knee. I understand this could be due to cleat positioning?

I had a similar problem and found this quite helpful.

http://www.bikeradar.com/fitness/article/take-care-of-your-knees-part-2-17445/

Moving my saddle down a couple of mil also helped