Hi all, well got the new discs and pads done yesterday and my god what a difference. Stops spot on and no howling or squeaking thank god. Looked at the old discs and found to have the same issues as yours. Fine cracks in them and also no copper grease anywhere. Pads were in good condition but changed them any way. Was supposed to have this done tomoz but garage got me in yesterday so all good. Have changed to a full set of bremo discs and pads so happy with the car now. I also had a 4 wheel alignment done as well and that has made a difference to the way the car drives as well. Next job re map but that's a few months of yet.
Steve xf