rattle problem?

corsa 1.2 53reg i drove car today (its my wifes car) seems ok on smooth roads bat as soon as u go over hump on one wheel ns os dont really mater it rattles the sound carries so hard to tell i will take car to scrap yard guy may be he could make sence of this ive had vauxhall all my life but this one is odd all parts have been changed ive gorn over the car my self dozens of time even garages give up