The additional rolling stock was required to increase the frequency of the service (particularly given the introduction of automatic electro-pneumatic signalling which allowed less headway between trains), plus the four-tracking of the section west of Hammersmith which allowed a greater frequency of trains to and from Richmond.
London | University of London | University College London | New York Stock Exchange | London School of Economics | King's College London | Tower of London | City of London | London Underground | London Symphony Orchestra | London, Ontario | London Stock Exchange | London Borough of Hackney | Imperial College London | Jack London | Hyde Park, London | Great Fire of London | Chelsea, London | The Velvet Underground | London Marathon | London and North Western Railway | 7 July 2005 London bombings | London Philharmonic Orchestra | London Palladium | Bishop of London | South London | London, Midland and Scottish Railway | Lord Mayor of London | East End of London | North London |