An Explosive Ordnance Disposal (EOD) team was called to Orford Ness in Suffolk after a member of the public spotted Unexploded Ordnance (UXO) on the shoreline. Although the device was photographed, and dated to World War Two, the EOD team were unable to locate it on arrival.
Orford Ness was long used as a practice bombing and air-to-air range, with many experimental weapons also tested there. It is not rare that rusted items of ordnance wash-up from time to time.
See: http://www.eadt.co.uk/news/bomb-disposal-team-on-suffolk-coast-1-5639717