Right, at first I thought it was the exhaust but its not - thankfully !!!
Now I am not sure where the noise is coming from - sometimes the front, sometimes the back!!! Only seems to happen when I am moving and has only just started over the last couple of days, so was thinking it was something rubbing but have looked at all obvious things - wheels etc but it all looks normal! but then what do i know?!?
I know the above is not a great description, but I would prefer to embarress myself here, rather than at a garage. Anyone got any ideas on what it could be?!?