I see you have a 2WD 04 1.1
Shock is the most likely, you can reach behind the wheel and push and pull on the shock, while shinning a torch on its top rubber bush
Just change the part that's causing the fault
Taking a shotgun can get expensive if you miss a few times
Exhaust
Something loose in the wheel well
Shock
Broken axle
Loose bolt
Loose or missing bump stops
Loose rear seat
And so on
Some will bang occasionally
Some will rattle
Some will be from one side
Some will be only over rough ground
Put the handbrake on firmly
Rock the car backward and forwards gently using 1st and reverse
Take everything out of the boot and fold the rear seat and take it for a drive,