In the 1930s, the architect, Charles Holden renowned for his work on many of London's Underground stations; also designed bus stop shelters. Various styles appeared. This kit builds two of what was perhaps the most common design. Many of these lasted into the 1950s, before being replaced by the later tubular aluminium shelter.
Be warned that these models require some careful work with the modelling knife. Bus stop flags and some paving is also supplied in the kit (Use a carved matchstick for the post.) 
Look also at the LTS shelter kit for an easier build and more shelters for the same price!