strange knocking Help!

[nath_ski]

Alright all, The other day was derving round some back roads near me after my car passed its mot (finally) and dipped my wheel into a bit of a dip on the side of the road (to avoid a van) Ever since then it does quite a nasty knock when i pull away only. Nothing through the gears at all, Have checked the wishbone bushes and has just had a new ball joint for the mot and all seems ok. Im pretty clueless now. Was thinking i knakered my suspension but aany ideas would be sweet.
Cheers