A rattle

Hello all i jumped on bike this morning to go to work and noticed a strange
rattling sound when i pulled away as im not mechanically minded ive not got a clue i can see hear where it comes from but dont know what it is dunno if i should be worries about it or not i checked chain etc nothing obvious anyone any ideas as to what it could be ????

I think you need to tell us more about the rattling sound.

Roughly, where does it come from? Does it get faster as you go quicker or rev the engine? What kind of rattle is it, high pitched, low pitched, does it sound like metal against metal?

Unfortunately from what you have said it is impossible to make a diagnosis.

Tony