UKPassats

Well as title says all was going smoothly driving great the remap is brill no naughty lights etc and then a clinking sound from the nsr area. I've had the car up on roadside ramps and cannot see or find anything loose. It's always when I go over a pothole or a speedbump just clinks then stops when driven over aforementioned. I thought the rear spring might be snapped cannot see any damage, maybe exhaust bracket loose or snapped again a no-no, I checked the rear disc backplate that's fine to. To be honest it's doesn't affect drivability but it's doing my nut in . Any pointers or anyone with similar problems guidance would be greatly appreciated.