The M25 or London Orbital Motorway is a 117-mile (188 km) motorway that encircles almost all of Greater London, England (with the exception of North Ockendon), in the United Kingdom. An ambitious concept to build four concentric ring roads around London was first mooted in the 1960s. A few sections of the outer two rings were constructed in the early 1970s, but the plan was abandoned and the sections were later integrated to form a single ring which became the M25, completed in 1986.
It is one of the busiest of the British motorway network: 196,000 vehicles were recorded on a busy day near Heathrow Airport in 2003 and the western half experienced an average daily flow of 147,000 vehicles in 2007. To alleviate congestion, sections of the motorway have been widened from the original three-lane carriageways to four-, five- or six-lane carriageways. Other sections use Smart motorway operation with hard shoulders replaced with standard lanes.
The M25, plus the short non-motorway A282 which joins the two ends of the M25 across the River Thames using the Dartford Crossing, is Europe's second longest orbital road after the Berliner Ring, which is 122 miles (196 km).
Henry Charles Beck (4 June 1902 – 18 September 1974), known as Harry Beck, was an English technical draughtsman best known for creating the present London UndergroundTube map in 1931. Beck drew up the diagram in his spare time while working as an engineering draftsman at the London Underground Signals Office. London Underground was initially sceptical of Beck's radical proposal, an uncommissioned spare-time project, but tentatively introduced it to the public in a small pamphlet in 1933.
Beck's approach to the map was to remove all geographical content except the River Thames so that the focus could be on the arrangement of lines and stations and to enable the central area to be expanded map. Beck first submitted his idea to Frank Pick in 1931 but it was considered too radical because it didn't show relative distances between stations. After a successful trial of 500 copies in 1932, distributed via a select few stations, the map was given its first full publication in 1933 (700,000 copies). It was immediately popular, and the Underground has used topological maps to illustrate the network ever since.
Image 10London Underground A60 Stock (left) and 1938 Stock (right) trains showing the difference in the sizes of the two types of rolling stock operated on the system. A60 stock trains operated on the surface and sub-surface sections of the Metropolitan line from 1961 to 2012 and 1938 Stock operated on various deep level tube lines from 1938 to 1988.
Image 30The newly constructed junction of the Westway (A40) and the West Cross Route (A3220) at White City, circa 1970. Continuation of the West Cross Route northwards under the roundabout was cancelled leaving two short unused stubs for the slip roads that would have been provided for traffic joining or leaving the northern section.
Image 31Sailing ships at West India Docks on the Isle of Dogs in 1810. The docks opened in 1802 and closed in 1980 and have since been redeveloped as the Canary Wharf development.
Image 45Arguably the best-preserved disused station building in London, this is the former Alexandra Palace station on the GNR Highgate branch (closed in 1954). It is now in use as a community centre (CUFOS).
Image 47Early style tube roundel in mosaic at Maida Vale Underground station.
Image 48The multi-level junction between the M23 and M25 motorways near Merstham in Surrey. The M23 passes over the M25 with bridges carrying interchange slip roads for the two motorways in between.
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