I haven't removed the bumper myself but not sure if it was done previously. I got a years Dealer warranty when i bought the car but it was first registered in Nov '11 so I thought I would get the remainder of the manufacturer warranty and then 1 year from November - but I don't think it works like that. Garage didn't know what to say when I rang them! I am hoping to hear back today after they have spoken to the service manager.
Thanks
Jenks