Brake grinding

Just driven my beloved for the first time in weeks only to hear a grinding noise coming from the passenger side. Checked the pads visually through the alloy to see loads of meat left but did notice some tiny score marks on the disc. Whats the likelyhood of some road grit or debris being stuck between disc and pad? Also whats the proccedure for removing the brake pads?

cheers
G

Good summary on changing the pads here

Grinding brakes normal after a period of inactivity I think. A bit of hard use should clean them up - provided you have plenty pad left.

Funny because I’d had that and now it’s gone away! I’d actually forgotten all about it and as a matter of fact - since Donnington in Feb! First real outing for a few months so I’d have to agree