London Underground stations that are listed buildings which he described as his "brick boxes with concrete lids", many of which are listed, five at Grade II*. Holden's design for the Underground's headquarters building at 55 Broadway including avant-garde sculptures by Jacob Epstein, Eric Gill and Henry Moore, incorporates St James Park station and is listed Grade I. London Underground stations that are listed buildings The London Underground is a metro system serving a large part of Greater London and parts of Buckinghamshire, Hertfordshire and Essex. Seventy-one of the 270 London Underground stations use buildings that are on the Statutory List of Buildings of Special Architectural or Historic
London commuter belt East and South East regions. Most districts are entirely, or have sections, within the M25 motorway or are within of Charing Cross. Adjacent districts often share characteristics of Outer London, such as forming part of the continuous urban sprawl, being served by the London Underground, being covered by the London telephone area code, (until 2000) forming part of the Metropolitan Police District and having a relatively high employed population working in London. Larger Urban Zone is a definition created by Eurostat that measures the population and expanse of metropolitan areas across European countries. The population of London's Larger Urban Zone