I have noticed some official stickers on the side of the engine where the cam belt is and one of the stickers has been removed and stuck on the top of the engine(on the black plastic thingy).Any ideas what the stickers are for?

Pictures would be helpful.

Possibly the injector codes so dont bin it

[u]I'll take some pics in daylight.They have some barcodes on and numbers and letters etc...[/u]

Defo sounds like the codes and position order of injectors if its coming loose take it off and put in the glove box that said the injector code is on top of the injector but can be hard to see if needed .