-
Dealer health check vs an MOT tester will be two different things.
They will probably last a lot longer than 7k miles (depending on how much you drive and how / where etc). Rust is normally lack of use!
I'd probably run them until they fail an MOT. (you may not want to do that though.)
My Subaru has had an "advisory" on it's rear brake pads for 3yrs on a trot and i've never changed them and it's never actually failed on them.
Main dealer health check says
Front brake discs rusted on inside
Rear brake discs rusted, replace soon
Skoda Superb, 5 years old, 40k miles. I'm saying they will last another year / 7k miles. Seem reasonable?
Edit: it's only 5 years old. Where did I get 7 from?!