1 March

• 1866 – Metropolitan Railway's City Widened Lines first used.
• 1880 – District Railway extends from West Brompton to Putney Bridge.
• 1883 – District Railway extends over the Great Western Railway from Ealing Broadway to Windsor.
• 1910 – District line extends from South Harrow to Rayners Lane where it connects to Metropolitan Railway.
• 1910 – District line extends over Metropolitan Railway from Rayners Lane to Uxbridge.

2 March

• 1863 – The West London Extension Railway opens between Addison Road and Clapham Junction.
• 1863 – Battersea Railway Bridge opens to carry the West London Extension Railway over the River Thames.
• 1863 – Clapham Junction station opens to serve the West London Extension Railway, the London, Chatham and Dover Railway, the London, Brighton and South Coast Railway and the London and South Western Railway.
• 1874 – Holborn Viaduct station opens as the second terminus of the London Chatham & Dover Railway.
• 1941 – London North Eastern Railway services between Highgate and East Finchley end having been operating parallel to Northern line services since 1940.
• 1948 – A crash of a Sabena passenger plane landing in poor visibility at Heathrow Airport kills 20. Two rescuers are awarded the George Medal.

3 March

• 1929 – Ludgate Hill station in the City of London closes.
• 1929 – Southern Railways closes the Merton Abbey branch to passengers.
• 1943 – A crush in the staircase entrance to Bethnal Green Underground station kills 173 as they are entering an air raid shelter.

4 March

• 1976 – An IRA bomb explodes on an empty train at Cannon Street station injuring eight on another train.
• 1989 – Purley station rail crash kills five when a train passes a signal at danger and collides with another.

5 March

• There are no anniversaries today

6 March

• 1935 – In a robbery at Croydon Aerodrome £21,000 of gold bullion is stolen from the Aerodrome's strongroom overnight. It is never recovered.

7 March

• 1665 – British naval ship London is destroyed with 300 killed when the powder magazine explodes in the Thames Estuary on its way to the capital.
• 1969 – Victoria line services commence between Warren Street and Victoria.

8 March

• 2013 – Piling operations in East Road, Hackney cause a pile to break through into the tunnel of the Northern City Line near Old Street station.

9 March

• 1940 – A German bomb kills 1 when it falls on the Metropolitan line platforms at King's Cross St Pancras.

10 March

• 1906 – Baker Street and Waterloo Railway opens between Baker Street and Lambeth North.
• 1932 – Victoria Coach Station opens.
• 1938 – Northern line crash injures 12 when a train runs into another in tunnel near Embankment due to a faulty signal.

11 March

• 1942 – Second Waterloo Bridge over the River Thames opens.

12 March

• 1870 – Tolls to cross Kingston Bridge are abolished.

13 March

• 1933 – Piccadilly line extends from Northfields to Hounslow West.
• 1933 – Piccadilly line extends from Arnos Grove to Oakwood.

14 March

• 2008 – Terminal 5 opens at Heathrow Airport.

15 March

• 1891 – Death of Sir Joseph Bazalgette, civil engineer.
• 1976 – An IRA bomb explodes on a Metropolitan line train at West Ham station injuring seven. The bomber then shots another and kills the train driver.

16 March

• 1976 – An IRA bomb explodes on a Piccadilly line train at Wood Green station injuring one.

17 March

• 1973 – Current London Bridge over the River Thames opens.
• 1976 – An IRA bomb is discovered in a train at Neasden Depot and later defused.

18 March

• 1928 – The Central London Railway's Wood Lane Power Station closes with power for the line being provided from Lots Road Power Station.

19 March

• There are no anniversaries today

20 March

• 2009 – City Widened Lines closed between Farringdon and Moorgate.

21 March

• 1898 – St Johns train crash kills three people when a passenger train runs into another in thick fog.

22 March

• There are no anniversaries today

23 March

• 1889 – Woolwich Ferry begins operation on the River Thames.
• 1907 – Baker Street and Waterloo Railway extends from Baker Street to Marylebone.

24 March

• 1965 – Junctions 1 to 5 of the M4 motorway open between Chiswick Flyover and Langley.
• 1969 – Freight services through Snow Hill tunnel end, bringing its use to an end.

25 March

• 1843 – The Thames Tunnel opens to pedestrians.

26 March

• There are no anniversaries today

27 March

• 1963 – British Railways Board publishes The Reshaping of British Railways report by Richard Beeching, which recommends closing many unprofitable railway lines.
• 2008 – Piccadilly line extends from Hatton Cross to Heathrow Terminal 5.

28 March

• 1815 – Birth of Sir Joseph Bazalgette, civil engineer.
• 1980 – London Transport Museum opens at Covent Garden.
• 1994 – Docklands Light Railway extends from Poplar to Beckton.

29 March

• 1920 – Croydon Aerodrome opens replacing Hounslow Heath Aerodrome as London's main airport.

30 March

• 1936 – Metropolitan line extends from Whitechapel to East Ham.
• 2008 – A crash of a light aircraft into a house shortly after take-off from Biggin Hill Airport kills 5.

31 March

• 1858 – First Chelsea Bridge (then known as Victoria Bridge) over the River Thames opens.
• 1913 – The Metropolitan Railway begins electric services on the East London line.
• 1909 – The Port of London Authority is established to manage London's docks and the river downstream of Teddington.
• 1994 – British Rail operation of the Waterloo & City line ends.

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