The remains of a suspected WWII shell were found at a nursery school in Gravesend, Kent, prompting the evacuation of staff and pupils. An Explosive Ordnance Disposal (EOD) team declared the four-and-a-half inch item safe on assessment and removed it without fuss.
The exact type and origin of the shell remains unknown.
See: http://www.kentonline.co.uk/gravesend/news/bomb-found-in-school-nursery-96024/