Crashing sound when going over a small bump

[StuA3]

hi when i go over a small pot hole or a speed bump the front end is smooth but when the back end goes over its a big bang like the suspension is shot but i've had it in the garage i bought it from and they can't see anything could it be anything else

 

[dunk]

try these:
anti-roll bar drop links
damper top mounting or dampers themselves
duff suspension bush somewhere
exhaust or something loose banging bodywork
spare wheel loose in the boot

 

[StuA3]

try these:
anti-roll bar drop links
damper top mounting or dampers themselves
duff suspension bush somewhere
exhaust or something loose banging bodywork
spare wheel loose in the boot

Definitely not the spare wheel
had the exhaust sorted but the others i will get checked thanks