London Boroughs

A London Borough is basically a form of local government, raising local taxes and administering local services. So London postcodes divide London on a geographical basis for postal sorting while London Boroughs divide London by boundaries between local authorities (boroughs). London Boroughs have a larger area than London postcodes. 

For a map of London postcodes click here.
For a map and explanation of London constituencies click here.
For a map of UK Counties Click Here London Boroughs Map