However, about a mile further on at 50 mph there was a clunk and a tinkling sound and I looked in my mirror to see a piece of debris just missing the following Merc
whilst bouncing down the road. Needless to say, I stopped, checked under the car and the went back to see if I could find the debris - nada. Must be deep in the undergrowth 
I drove carefully to work and couldn't feel or hear anything different. (Apart from the lack of knocking noise!!!
I had another look underneath at lunchtime and still can't see anything obvious. I didn't jack it up though. Does anyone have any idea what could have fallen off and whether its safe to drive home tonight??? My thoughts are - prop shaft centre mount or rear anti-roll bar clamp - but surely a lack of either of these would be obvious when driving.
Cheers
