My brakes stopped working earlier tonight, just rolling through town in light traffic, heard a clunk that sounded like I'd driven over a loose manhole cover. As I rolled into a layby they started to work again. Turned everything off, gave em a pump and checked in the streetlight that nothing had apparently fallen off or come loose under the car or around the wheels.
Drives fine now. Had a corroded line and (bias?) valve replaced last week as part of MOT.
Any thoughts?