伦敦的邮政编码不是数字，而是字母开始分为：W West London、WC West Central London
SW South West London、SE South East London、NW North West London、N North、London、E East London、EC East Central London。
其中EC 代表伦敦旧城、E 代表伦敦东部、SE 代表伦敦东南部。
伦敦的邮政编码由两部分。第一部分以字母开头，根据在伦敦的方位而定；后面的数字根据区域名称而定，伦敦邮政编码第二部分由一个数字和两个字母组成，根据具体街道名称而定。
邮编发展历史
（英文：postcode）是邮电部门为实现邮政现代化而采取的一项措施，诞生于美国。
邮政编码起源于英国。20世纪50年代初，英国就开始研究邮政编码，并于1959年在诺威治邮区试行，从而引起许多国家的注意。西德于1961正式公布4位数的邮政编码，成为世界上第一个在全国范围内推行邮政编码的国家。紧接着，美、英、法、澳、瑞士等国陆续在全国推行。
1965年后，随着机械设备的广泛应用，邮政编码的优越性更加明显地表现出来，故日、意、加、荷和瑞典等国也相继实行了邮政编码。至 1988年初，世界上已有50多个国家和地区实行了邮政编码制度。
首先伦敦不属于美国。美国的邮编根据不同州然后州又有很多市都不一样太多了。这哪里知道你是要哪个地区的邮编。伦敦邮编也是根据不同地区邮编不同，我大概找了一下贴这里了。你看看
West London
W1 covers the West End, including Mayfair, Soho and south Marylebone
W2 covers the Paddington, Bayswater, Hyde Park area
W3 Acton
W4 Chiswick
W5 Ealing
W6 Hammersmith
W7 Hanwell
W8 Kensington (central Kensington)
W9 Warwick Avenue, Maida Hill (also covers Maida Vale)
W10 Ladbroke Grove, North Kensington
W11 Notting Hill, Holland Park
W12 Shepherd's Bush
W13 West Ealing
W14 West Kensington
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West Central London
WC1 covers the Bloomsbury & Gray's Inn area
WC2 covers the Holborn / Strand / Covent Garden area
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South West London
SW1 covers the Westminster, Belgravia, Pimlico area
SW2 Brixton (central and southern Brixton, includes Streatham Hill)
SW3 Chelsea, Brompton
SW4 Clapham
SW5 Earl's Court
SW6 Fulham, Parson's Green
SW7 South Kensington
SW8 South Lambeth (also covers Vauxhall, Nine Elms)
SW9 Stockwell (includes northern Brixton)
SW10 World's End, West Brompton (NB Brompton is coverd by SW7, SW3 and SW1)
SW11 Battersea, Clapham Junction
SW12 Balham
SW13 Barnes, Castelnau
SW14 Mortlake (also covers East Sheen)
SW15 Putney (also covers Roehampton)
SW16 Streatham, Norbury
SW17 Tooting
SW18 Earlsfield, Wandsworth (Town)
SW19 Wimbledon (also covers Merton (Town) and Collier's Wood)
SW20 South Wimbledon, West Wimbledon (also covers Raynes Park and Cottenham Park)
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South East London
SE1 covers the Waterloo, Bermondsey, Southwark (South Bank & The Borough) & north Lambeth area
SE2 Abbey Wood (includes Thamesmead South)
SE3 Blackheath, Westcombe Park (also covers Kidbrooke)
SE4 Brockley, Crofton Park, Honor Oak Park
SE5 Camberwell
SE6 Catford, Hither Green (also covers Bellingham)
SE7 Charlton
SE8 Deptford
SE9 Eltham (also covers Mottingham)
SE10 Greenwich (Town)
SE11 Lambeth, Kennington
SE12 Lee, Grove Park
SE13 Hither Green, Lewisham (Town)
SE14 New Cross, New Cross Gate
SE15 Peckham, Nunhead
SE16 Rotherhithe, South Bermonsey, Surrey Docks
SE17 Walworth, Elephant & Castle
SE18 Woolwich (also covers Plumstead)
SE19 Crystal Palace, Norwood (central Norwood: Upper Norwood and Norwood New Town)
SE20 Anerley (also covers Penge)
SE21 Dulwich (includes West Dulwich)
SE22 East Dulwich
SE23 Forest Hill
SE24 Herne Hill
SE25 South Norwood
SE26 Sydenham
SE27 West Norwood, Tulse Hill
SE28 Thamesmead (NB small parts of Thamesmead are in DA18 and SE2)
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North West London
NW1 covers the Camden Town, Regent's Park, north Marylebone area
NW2 Cricklewood, Neasden (also covers Dollis Hill)
NW3 Hampstead, Swiss Cottage (also covers Belsize Park)
NW4 Hendon, Brent Cross
NW5 Kentish Town
NW6 Kilburn, Queens Park (also covers South & West Hampstead, Brondesbury Park)
NW7 Mill Hill
NW8 St John's Wood
NW9 The Hyde (also covers Kingsbury & Colindale)
NW10 Willesden (also covers Harlesden & Kensal Green)
NW11 Golders Green (includes western part of Hampstead Garden Suburb)
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North London
N1 covers the Islington, Barnsbury, Canonbury area
N2 East Finchley (includes eastern part of Hampstead Garden Suburb)
N3 Finchley Central, Finchley Church End (central Finchley)
N4 Finsbury Park, Manor House
N5 Highbury
N6 Highgate
N7 Holloway (includes Lower Holloway)
N8 Hornsey (also covers Crouch End)
N9 Lower Edmonton
N10 Muswell Hill
N11 New Southgate (also covers Friern Barnet)
N12 North Finchley, Woodside Park
N13 Palmers Green
N14 Southgate
N15 South Tottenham, Seven Sisters
N16 Stoke Newington, Stamford Hill
N17 Tottenham
N18 Upper Edmonton
N19 Upper Holloway, Archway, Tufnell Park
N20 Whetstone (also covers Totteridge)
N21 Winchmore Hill
N22 Wood Green, Alexandra Palace
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East London
E1 Whitechapel, Stepney, Mile End
E2 Bethnal Green, Shoreditch
E3 Bow, Bromley-by-Bow
E4 Chingford, Highams Park
E5 Clapton
E6 East Ham (also covers Beckton)
E7 Forest Gate, Upton Park
E8 Hackney, Dalston
E9 Hackney, Homerton (includes South Hackney)
E10 Leyton
E11 Leytonstone (also covers Wanstead)
E12 Manor Park
E13 Plaistow
E14 Poplar, Millwall (also covers Isle of Dogs)
E15 Stratford, West Ham
E16 Victoria Docks & North Woolwich (also covers Canning Town)
E17 Walthamstow
E18 Woodford & South Woodford (in reality only South Woodford is covered by E18; most of Woodford itself is covered by IG8)
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East Central London
EC1 covers the Clerkenwell, Finsbury, Barbican area
EC2 covers the north eastern (Moorgate, Liverpool Street) area of The City
EC3 covers the south eastern (Monument, Aldgate, Fenchurch St, Tower Hill) area of The City
EC4 covers the western (Fleet Street, Temple, Blackfriars, St Paul's) area of The City