Since fitting my big brakes, I've had a loud click/knock noise when slowing.
The calipers are secure so I know it's not that but I've pinned it down to the pads.
Looking at the part of the pad that comes through the caliper, connecting to the retaining spring (remember member "expoliceV70's thread about the spring flying out due to there not being a clip coming off the pad) the metal blades/clips/things appear to have been stretched, as if somebody has tried removing the pad without unclipping it from the spring. The spring appears to sit a bit further out from the caliper than it should as a result and when I bashed it back in with a screwdriver, the noise went away for about 3 miles and now it's back.

Would I be right in presuming I need new pads? I've looked at the pad and un-stretching the metal bit doesn't seem to be an option.

All input welcome guys but reading this back, it looks like I've answered my own question.