| SW1A |
LONDON |
Whitehall, Buckingham Palace, the Houses of Parliament and west of St James's |
Westminster |
| SW1E |
LONDON |
Northern 'Victoria' around Buckingham Gate (a street) to include both sides of part of Victoria Street |
Westminster |
| SW1H |
LONDON |
Surrounds of St James's Park tube station centred on Broadway, Queen Anne's Gate and Old Queen Street to include both sides of part of Victoria Street – derivation: Horse Guards Parade |
Westminster |
| SWa1P |
LONDON |
A projection around Parliament Square. Nearby Westminster School to Westminster Cathedral to CCAL, University of the Arts, London (omitting all backstreets nearest to Vauxhall Bridge Road) – derivation: Parliament Square |
Westminster |
| SW1V |
LONDON |
between Vauxhall Bridge, Grosvenor (or Victoria Railway) Bridge and Victoria Station, taking in both sides of Vauxhall Bridge Road; includes Pimlico |
Westminster |
| SW1W |
LONDON |
South or lower Belgravia and Chelsea (a corner), from Sloane Square to Victoria Station to Grosvenor Waterside basin |
Westminster, Kensington and Chelsea |
| SW1X |
LONDON |
Rest of Belgravia (north of Eaton Square), Knightsbridge (eastern half) and Chelsea (a corner) |
Westminster, Kensington and Chelsea |
| SW1Y |
LONDON |
All but the west of St James's |
Westminster |
| SW2 |
LONDON |
Brixton district: Brixton Hill, Tulse Hill (part), Brixton (part), Streatham Hill, Clapham Park (part), Lambeth |
Lambeth |
| SW3 |
LONDON |
Chelsea district: Chelsea, Brompton, Knightsbridge (part) |
Kensington and Chelsea |
| SW4 |
LONDON |
Clapham district: Clapham, Stockwell (part) |
Lambeth, Wandsworth |
| SW5 |
LONDON |
Earls Court district: Earl's Court |
Kensington and Chelsea |
| SW6 |
LONDON |
Fulham district: Fulham, Parsons Green |
Hammersmith and Fulham |
| SW7 |
LONDON |
South Kensington district: South Kensington, Knightsbridge (part) |
Kensington and Chelsea, Westminster |
| SW8 |
LONDON |
South Lambeth district: South Lambeth, Vauxhall, Nine Elms (east), Clapham (north), Stockwell (northwest), Oval (west) |
Lambeth, Wandsworth |
| SW9 |
LONDON |
Stockwell district: Brixton, Stockwell, Clapham (part), Oval (part) |
Lambeth |
| SW10 |
LONDON |
West Brompton district: West Brompton, Chelsea (part) |
Kensington and Chelsea, Hammersmith and Fulham |
| SW11 |
LONDON |
Battersea head district: Battersea, Nine Elms (west) |
Wandsworth, Lambeth |
| SW12 |
LONDON |
Balham district: Balham, Clapham Park (part), Wandsworth Common (part) |
Wandsworth, Lambeth |
| SW13 |
LONDON |
Barnes district: Barnes |
Richmond upon Thames |
| SW14 |
LONDON |
Mortlake district: Mortlake, East Sheen |
Richmond upon Thames |
| SW15 |
LONDON |
Putney district: Putney, Roehampton, Kingston Vale, Putney Heath, Putney Vale, Richmond Park, Roehampton Vale |
Wandsworth, Kingston upon Thames, Richmond upon Thames |
| SW16 |
LONDON |
Streatham district: Streatham, Streatham Common, Norbury, Streatham Park, Furzedown, Streatham Vale, Mitcham Common, Pollards Hill, Eastfields, West Norwood (part) |
Lambeth, Croydon, Wandsworth, Merton |
| SW17 |
LONDON |
Tooting district: Tooting, Balham (part), Mitcham (part), Furzedown |
Wandsworth, Merton |
| SW18 |
LONDON |
Wandsworth district: Wandsworth Town, Southfields, Earlsfield |
Wandsworth |
| SW19 |
LONDON |
Wimbledon district: Wimbledon, Colliers Wood, Merton Park, Merton Abbey, Southfields, Morden (part) |
Merton, Wandsworth |
| SW20 |
LONDON |
West Wimbledon district: Raynes Park, Lower Morden, Merton Park, Wimbledon Chase, very small part of the east of New Malden |
Merton, Kingston upon Thames |