clicking noise on peugeote 206 ?

I have a pug 206 03 model over the last month ive had a clicking noise when driving along, its coming from the engine area but when I put the clutch down it stops, it also stops when excellerator is pressed down (don't know if that's spelt right) so if I have it in gear say at 40mph and take feet off pedals the clicking noise is there push clutch or excellerator it stops I had a new clutch fitted about 1 year ago any help please thanks