BS National Beehive
The Improved National Beehive was a form of Langstroth beehive standardized by two British Standards (in 1946 and then in 1960, before being withdrawn in 1984). The same standard contained the specification of the Smith beehive: these two forms represent the most popular designs used in the UK. == Design == The National hive, as it is usually known, is based on Langstroth hive design principles: a vertical stack of modular components.