Knock Knock

[R3k1355]

My 182 (04 plate on 86K) has a knock coming from the rear, whenever you go over a big bump or a speedhump, kinda sounds like something hitting the floor maybe?
I've taken the parcel shelf out to make sure it wasn't that, nothing else on the interior feels loose.
I'm going to have a look at the rear suspension tomorrow, is there anywhere in particular I should concentrate - any common faults?

Thanks

 

[sidey]

New rear shocks needed, replace both sides

 

[dangerous dave]

How's your exhaust sitting? When the rubbers shot it rests on the mount and jumps about... Another easy to rule out suspect..