right chaps need some help!

when in the car and i turn right there is an awful clicking noise as if the driveshaft is catching something! and when i turn left there is a scraping noise! thought it could be a cv joint but that would click all the time wouldn't it? and when examining the front brake disks there is abnormal wear on the drivers side but why only here the scraping when turning left? it's doing my head in!!! any ideas peeps?

chears