Ok guy's,i'll jump straight into this.
After heavy braking i get a knocking noise from under the car,it goes away after couple hundred yards and doesn't happen every time.
Thought something was trapped in there somewhere but have had wheels off and can't see anything wrong.
Just been through mot and was told everything was fine for a good few miles yet so not suspecting discs or pads allthough the discs are slightly lipped.
Could i get a noise like that from driveshaft or has anyone got any other ideas.
I am pretty useless at the mechanical stuff so any help or ideas where to check much appreciated.

Ian