Time to replace the discs. Wouldn't be surprised if they are original at just over 100,000k.
Pads are fairly new (in mileage terms, about 4 years old) but not averse to doing all in one go.
So, what are the recommendations for good quality replacement discs and (maybe) pads? There just seem to be a large choice, so looking for experience here.
Everything else on the braking system has been done.