London is the starting point for a number of motorway routes. The M25 is an orbital motorway which enables vehicles to avoid travelling through central London and is one of the busiest motorways in Europe.
The Brill Tramway was a six-mile (10 km) rail line in the Aylesbury Vale, Buckinghamshire, England. It was privately built in 1871 by the 3rd Duke of Buckingham as a horse tram line to serve his estate around Wotton House and connect to the national rail network. In 1872 it was extended to Brill and converted to passenger use in early 1872. Two locomotives were bought but the line had been built for horses and trains travelled at average 4 miles per hour (6.4 km/h).
The line was upgraded in 1894 and rebuilt in 1910 by the Metropolitan Railway which introduced more advanced locomotives, allowing trains to run faster. The population of the area remained low, and the primary income remained goods to and from farms. Between 1899 and 1910 other lines were built in the area, providing more direct services to London and the north of England. The Brill Tramway went into financial decline.
In 1933 the Metropolitan Railway became part of London Transport. The Brill Tramway became part of the London Underground, despite being 40 miles (65 km) from London and not being underground. Seeing little possibility that the line could become a viable passenger route, London Transport closed the Brill Tramway in 1935. Little trace remains other than the former junction station at Quainton Road, now the Buckinghamshire Railway Centre.
Charles Henry Holden (12 May 1875–1 May 1960) was an English architect best known for his designs of some of the 1920s and 1930s stations on the London Underground, but who was already a distinguished architect before then, notably for his Imperial War Graves Commission cemeteries in Belgium and northern France.
Many of Holden's later designs for Underground stations went unrealised or were scaled back because of World War II with only East Finchley representative of a series of stations planned for the cancelled extension of the Northern line to Bushey Heath and with stations on the Central line's extension into east London being scaled back by post-war austerity. Modestly believing that architecture was a joint effort, Holden twice declined the offer of a Knighthood.