 Police Constable Edward George Brown Greenoff was posthumously awarded the King's Police Medal, and is commemorated with a plaque on the Memorial to Heroic Self Sacrifice in Postman's Park, in central London.The Silvertown explosion was not the final British munitions plant disaster of the First World War.The National Shell Filling Factory, Chilwell, in Nottingham, exploded on 1 July 1918, killing 137 and injuring 250.