what is the postcode for london?
E15 4HT W1F 0HS W11 3JS E5 8BP SW1P 2PD NW1 3HB E6 6ER W1W5BD WC1X 8RA SE1 7JW
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 Forty per cent of Greater London is covered by the London post town , within which ' LONDON ' forms part of postal addresses . The London telephone area code ( 020 ) covers a larger area , similar in size to Greater London , although some outer districts are omitted and some places just outside are included . The Greater London boundary has been aligned to the M25 motorway in places . 

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 London currently has one sister city : 

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 Until 1889 , the name " London " officially applied only to the City of London , but since then it has also referred to the County of London and now Greater London . 

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 London is the seat of the Government of the United Kingdom . Many government departments are based close to the Palace of Westminster , particularly along Whitehall , including the Prime Minister 's residence at 10 Downing Street . The British Parliament is often referred to as the " Mother of Parliaments " ( although this sobriquet was first applied to England itself by John Bright ) because it has been the model for most other parliamentary systems . There are 73 Members of Parliament ( MPs ) from London , who correspond to local parliamentary constituencies in the national Parliament . As of May 2015 , 45 are from the Labour Party , 27 are Conservatives , and one is a Liberal Democrat . 

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 Such names have remained in use through tradition , each referring to a local area with its own distinctive character , but without official boundaries . Since 1965 Greater London has been divided into 32 London boroughs in addition to the ancient City of London . The City of London is the main financial district , and Canary Wharf has recently developed into a new financial and commercial hub in the Docklands to the east . 
