2001 Volvo V40 Estate - "HELP" Wanted - Colin J

Can anyone help me, i have a very annoying rattle coming from somewhere it seems worse when going slow,it seems to start at the front off side front and travel through the whole of the car from front to back,symtoms seem very similar to a loose exhaust system but took it to local National Tyre Depot yesterday and they said the exhaust was ok,they had it jacked up on the ramp and spun all 4 wheels and they did not think it was a wheel bearing,their conclusions was rust on the discs which i dont think it is,i have cleaned the spare wheel well out and checked jack and wheel brace and they are firmally in place.I have bounced the 2 front suspensions legs up/down and there is no noise from them. Its a real head scratcher,so if their is anyone on the forum got any ideas i would be very grateful for any HELP.

Colin