| EC (East Central) | City of London, Clerkenwell, Finsbury | Centro financiero y zonas históricas. | EC1A (St. Paul’s), EC2M (Liverpool Street) |
| WC (West Central) | Holborn, Bloomsbury, Covent Garden | Zonas comerciales, culturales y universitarias. | WC1X (Gray’s Inn), WC2N (Trafalgar Square) |
| N (North) | Islington, Camden, Haringey | Barrios residenciales y zonas vibrantes como Camden Town. | N1 (Islington), N6 (Highgate), N19 (Archway) |
| NW (North West) | Kilburn, Hampstead, Maida Vale | Áreas verdes y residenciales de clase alta. | NW1 (Camden), NW3 (Hampstead), NW8 (St. John’s Wood) |
| E (East) | Stratford, Canary Wharf, Hackney | Zonas en desarrollo, financieras (Canary Wharf) y culturales. | E1 (Whitechapel), E14 (Isle of Dogs), E20 (Olympic Park) |
| SE (South East) | Greenwich, Bermondsey, Peckham | Mezcla de zonas históricas y barrios multiculturales. | SE1 (South Bank), SE10 (Greenwich), SE16 (Rotherhithe) |
| SW (South West) | Chelsea, Wimbledon, Kingston upon Thames | Áreas residenciales exclusivas y parques. | SW1A (Houses of Parliament), SW7 (South Kensington), SW19 (Wimbledon) |
| W (West) | Notting Hill, Kensington, Acton | Zonas de lujo, tiendas y parques. | W1 (Mayfair), W8 (Kensington), W11 (Notting Hill) |
| BR (Bromley) | Bromley, Beckenham | Suburbios del sureste de Londres. | BR1 (Bromley), BR3 (Beckenham) |
| CR (Croydon) | Croydon, Purley | Suburbios del sur con centros comerciales. | CR0 (Croydon Central), CR2 (South Croydon) |
| HA (Harrow) | Harrow, Wealdstone | Suburbios del noroeste. | HA1 (Harrow Central), HA3 (Wealdstone) |
| IG (Ilford) | Ilford, Barking | Suburbios del este (parte de Greater London). | IG1 (Ilford), IG11 (Barking) |
| KT (Kingston) | Kingston upon Thames, Surbiton | Suburbios del suroeste. | KT1 (Kingston), KT6 (Surbiton) |
| RM (Romford) | Romford, Hornchurch | Suburbios del noreste. | RM1 (Romford), RM11 (Hornchurch) |
| SM (Sutton) | Sutton, Carshalton | Suburbios del sur. | SM1 (Sutton), SM5 (Carshalton) |
| TW (Twickenham) | Twickenham, Richmond | Suburbios del oeste junto al río Támesis. | TW1 (Twickenham), TW9 (Richmond) |
| UB (Uxbridge) | Uxbridge, Hayes | Suburbios del oeste (parte de Greater London). | UB1 (Southall), UB8 (Uxbridge) |
| WD (Watford) | Watford (limítrofe) | Zona al noroeste de Londres (no estrictamente Londres). | WD17 (Watford Central) |
