it isnt the sort of thing to leave and see what happens, if your not sure what the problem is then take it to your local garge and get them to investigate and sort it mate, you dont want to be driving round with a car which has a fooked disc and pad set one side, it could result in all sorts of bad things.
You are correct and I appreciate what you are saying, but I don't deserve a telling off!

I was planning doing the disc/discs this weekend, but the boot intervened with those plans and I only found that last night when I got in. It has been in the garage today, I was simply on here looking for some ideas what to expect if they were to sort it out. Not hoping that by asking you it would magically repair itself!
CV had split, contaminated brakes, which started rubbing, which developed heat, which knackered the rotor.
So: CV boot replaced (CV itself is still OK) & both discs replaced as they were getting thin.
Took it out to bed the new rotors in properly and the problem is now sorted.
The end.