• CONSTRUCTION

    Constructed by Sir Marc Brunel and his son Isambard, the Thames Tunnel opens
  • OPENING

    On 10 January, The Metropolitan Railway opens the world's first underground railway, between Paddington (then called Bishop's Road) and Farringdon Street
  • THE FIRST LINE

    The first section of the Metropolitan District Railway, from South Kensington to Westminster (now part of the District and Circle lines), opens
  • FIRST TRAINS

    The first steam trains travel through the Brunels' Thames Tunnel
  • Bermondsey

    Running from the Tower of London to Bermondsey, the first Tube tunnel opens
  • THE CIRCLE

    The Circle line is completed
  • FIRST DEEP-LEVEL ELECTRIC RAILWAY

    On 18 December, The City and South London Railway opens the world's first deep-level electric railway. It runs from King William Street in the City of London, under the River Thames, to Stockwell
  • THE PRINCE OF WALES INAUGURATES A SECTION OF LINE

    The Prince of Wales opens the Central London Railway from Shepherd's Bush to Bank (the 'Twopenny Tube'). This is now part of the Central line
  • WWI

    The Underground Electric Railway Company of London (known as the Underground Group) is formed. By the start of WWI, mergers had brought all lines - except the Metropolitan line
  • ELECTRICITY

    District and Circle lines become electrified
  • NEW LINES

    Baker Street & Waterloo Railway (now part of the Bakerloo line) opens and runs from Baker Street to Kennington Road (now Lambeth North). Great Northern, Piccadilly & Brompton Railway (now part of the Piccadilly line) opens between Hammersmith and Finsbury Park
  • SHELTERS

    Between September 1940 and May 1945, most Tube station platforms are used as air raid shelters. Some, like the Piccadilly line, Holborn - Aldwych branch, are closed to store British Museum treasures
  • VICTORIA LINE

    The Queen opens the Victoria line
  • JUBILEE LINE

    The Prince of Wales opens the Jubilee line
  • TRAGIC FIRE

    A tragic fire at King's Cross station kills 31 people
  • OYSTER CARD

    The Oyster card is introduced
  • BOMB ATTACKS

    52 people are killed in bomb attacks on three Tube trains and a bus on 7 July
  • NIGHT RUNS

    All-night Night Tube services begin operating on sections of some lines on Fridays and Saturdays.