Postcodes for places outside the London postcode area but within Greater London
BR – Bromley
| Postcode district | Post town | Coverage | Local authority area |
| BR1 | BROMLEY | Bromley, Bickley, Downham, Sundridge | Bromley, Lewisham |
| BR3 | BECKENHAM | Beckenham, Elmers End, Shortlands, Eden Park, Park Langley | Bromley, Lewisham, Croydon |
| BR4 | WEST WICKHAM | West Wickham | Bromley |
| BR5 | ORPINGTON | Petts Wood, St Mary Cray, St Paul’s Cray, Ruxley | Bromley |
| BR6 | ORPINGTON | Orpington, Locksbottom, Farnborough, Green Street Green, Chelsfield, Downe, Pratt’s Bottom, Well Hill | Bromley, Sevenoaks |
| BR7 | CHISLEHURST | Chislehurst, Elmstead | Bromley, Greenwich |
| BR8 | SWANLEY | Swanley, Hextable, Crockenhill, Swanley Village | Sevenoaks, Bromley, |
CR – Croydon
| Postcode district | Post town | Coverage | Local authority area |
| CR0 | CROYDON | Croydon, Addiscombe, Woodside (part), Selhurst, Broad Green, Spring Park, Shirley, Addington, New Addington, Coombe, Forestdale, Waddon, Beddington, Thornton Heath (part) | Croydon, Sutton |
| CR2 | SOUTH CROYDON | South Croydon, Sanderstead, Selsdon, part of Addington | Croydon |
| CR3 | CATERHAM; WHYTELEAFE | Caterham, Chaldon, Woldingham, Whyteleafe, Hamsey Green | Tandridge, Croydon |
| CR4 | MITCHAM | Mitcham, Mitcham Common, Pollards Hill, Eastfields, Beddington Corner | Merton, Sutton, Croydon |
| CR5 | COULSDON | Coulsdon, Old Coulsdon, Chipstead, Hooley, Netherne-on-the-Hill, part of Woodmansterne, Clockhouse | Croydon, Reigate and Banstead, Sutton |
| CR6 | WARLINGHAM | Warlingham, parts of Chelsham and Farleigh, Hamsey Green | Tandridge, Croydon, Bromley |
| CR7 | THORNTON HEATH | Thornton Heath, Broad Green (part) | Croydon, Merton |
| CR8 | PURLEY; KENLEY | Purley, Kenley, Russell Hill | Croydon, Sutton, Tandridge |
| CR9 | CROYDON | Croydon and other areas within CR0 (located in certain buildings within CR0) | Croydon |
DA – Dartford
| Postcode district | Post town | Coverage | Local authority area |
| DA1 | DARTFORD | Dartford, Crayford, Barnes Cray | Bexley, Dartford |
| DA5 | BEXLEY | Bexley, parts of Albany Park and Joyden’s Wood | Bexley, Dartford |
| DA6 | BEXLEYHEATH | Bexleyheath, Upton | Bexley |
| DA7 | BEXLEYHEATH | Bexleyheath (north), Barnehurst | Bexley |
| DA8 | ERITH | Erith, Northumberland Heath, Slade Green | Bexley |
| DA14 | SIDCUP | Sidcup, Foots Cray, North Cray, Longlands, Ruxley, part of Albany Park | Bexley, Bromley |
| DA15 | SIDCUP | Sidcup (north), Blackfen, Lamorbey, Longlands | Bexley, Greenwich |
| DA16 | WELLING | Welling, Falconwood, East Wickham | Bexley, Greenwich |
| DA17 | BELVEDERE | Belvedere, Lessness Heath | Bexley |
| DA18 | ERITH | Erith Marshes, Thamesmead (part) | Bexley |
EN – Enfield
| Postcode district | Post town | Coverage | Local authority area |
| EN1 | ENFIELD | Bush Hill Park; eastern parts of Bulls Cross, Enfield Town, Forty Hill, outskirts of Lower Edmonton | Enfield |
| EN2 | ENFIELD | Botany Bay, Clay Hill, Crews Hill; western parts of Bulls Cross, Enfield Chase, Enfield Town, Forty Hill, Gordon Hill | Enfield |
| EN3 | ENFIELD | Enfield Highway, Enfield Island Village, Enfield Lock, Enfield Wash, Ponders End | Enfield |
| EN4 | BARNET | Hadley Wood, Cockfosters, East Barnet, New Barnet | Barnet, Enfield |
| EN5 | BARNET | High Barnet, Arkley | Barnet, Hertsmere |
| EN7 | WALTHAM CROSS | Cheshunt, Goffs Oak, Some parts of Enfield | Broxbourne, Enfield |
| EN8 | WALTHAM CROSS | Waltham Cross, Cheshunt, Some parts of Enfield | Broxbourne, Enfield |
HA – Harrow
| Postcode district | Post town | Coverage | Local authority area |
| HA0 | WEMBLEY | Wembley Central (west), North Wembley, Alperton, Sudbury (south), Sudbury Hill | Brent, Harrow, Ealing |
| HA1 | HARROW | Harrow, Harrow on the Hill, North Harrow, Northwick Park, Sudbury (north), Sudbury Hill | Harrow, Brent |
| HA2 | HARROW | North Harrow, South Harrow, West Harrow, Rayners Lane (south) | Harrow |
| HA3 | HARROW | Harrow Weald, Kenton, Wealdstone, Queensbury, Belmont (west and south) | Harrow, Brent |
| HA4 | RUISLIP | Ruislip, Eastcote (west and south), South Ruislip, Ruislip Manor, Ruislip Gardens | Hillingdon |
| HA5 | PINNER | Pinner, Eastcote (north and east), Hatch End, Rayners Lane (north), Carpenders Park (part) | Harrow, Hillingdon, Three Rivers |
| HA6 | NORTHWOOD | Northwood, Northwood Hills, Moor Park | Hillingdon, Three Rivers |
| HA7 | STANMORE | Stanmore, Queensbury, Belmont (north and east) | Harrow, Brent |
| HA8 | EDGWARE | Edgware, Burnt Oak, Canons Park, Queensbury | Barnet, Brent, Harrow |
| HA9 | WEMBLEY | Wembley Central (east), Wembley Park, Preston, Tokyngton | Brent |
IG – Ilford
| Postcode district | Post town | Coverage | Local authority area |
| IG1 | ILFORD | Ilford, Cranbrook, Loxford | Redbridge |
| IG2 | ILFORD | Gants Hill, Newbury Park, Aldborough Hatch | Redbridge |
| IG3 | ILFORD | Seven Kings, Goodmayes | Redbridge |
| IG4 | ILFORD | Redbridge | Redbridge |
| IG5 | ILFORD | Clayhall | Redbridge |
| IG6 | ILFORD | Barkingside, Fullwell Cross, Hainault (south), Fairlop | Redbridge |
| IG7 | CHIGWELL | Chigwell, Chigwell Row, Hainault (north) | Epping Forest, Redbridge |
| IG8 | WOODFORD GREEN | Woodford Green, Woodford Bridge, Highams Park (part) | Redbridge, Waltham Forest |
| IG9 | BUCKHURST HILL | Buckhurst Hill | Epping Forest |
| IG10 | LOUGHTON | Loughton, High Beach (part) | Epping Forest |
| IG11 | BARKING | Barking, Creekmouth | Barking and Dagenham |
KT – Kingston Upon Thames
| Postcode district | Post town | Coverage | Local authority area |
| KT1 | KINGSTON UPON THAMES | Kingston upon Thames, Hampton Wick, Norbiton | Kingston upon Thames, Richmond upon Thames |
| KT2 | KINGSTON UPON THAMES | Kingston upon Thames, Canbury, Coombe | Kingston upon Thames, Richmond upon Thames |
| KT3 | NEW MALDEN | New Malden, part of Old Malden | Kingston upon Thames, Merton |
| KT4 | WORCESTER PARK | Worcester Park, Cuddington, part of Old Malden, Stoneleigh | Sutton, Epsom and Ewell, Kingston upon Thames, Merton |
| KT5 | SURBITON | Surbiton, Berrylands, Tolworth | Kingston upon Thames |
| KT6 | SURBITON | Surbiton, Tolworth, Long Ditton | Kingston upon Thames, Elmbridge |
| KT8 | EAST MOLESEY; WEST MOLESEY | East Molesey, West Molesey, Hampton Court Palace and part of its Park; 1.5 Thames islands, part of Bushy Park, Hampton Court neighbourhood, Hampton | Elmbridge, Richmond upon Thames |
| KT9 | CHESSINGTON | Chessington including Malden Rushett, Hook, part of Long Ditton | Kingston upon Thames; Elmbridge |
RM – Romford
| Postcode district | Post town | Coverage | Local authority area |
| RM1 | ROMFORD | Romford, Rise Park | Havering |
| RM2 | ROMFORD | Gidea Park, Heath Park | Havering |
| RM3 | ROMFORD | Harold Wood, Harold Hill, Noak Hill, Harold Park | Havering |
| RM4 | ROMFORD | Havering-atte-Bower, Abridge, Stapleford Abbotts, Noak Hill, Navestock, Stapleford Tawney, Stapleford Aerodrome | Brentwood, Epping Forest, Havering |
| RM5 | ROMFORD | Collier Row | Havering, Redbridge |
| RM6 | ROMFORD | Chadwell Heath, Marks Gate, Little Heath, Goodmayes (north), Hainault (South) | Barking and Dagenham, Havering, Redbridge |
| RM7 | ROMFORD | Rush Green, Mawneys, Romford | Havering |
| RM8 | DAGENHAM | Dagenham, Becontree, Becontree Heath, Chadwell Heath | Barking and Dagenham, Redbridge |
| RM9 | DAGENHAM | Dagenham, Becontree Castle Green | Barking and Dagenham, Havering, Redbridge |
| RM10 | DAGENHAM | Dagenham, Becontree | Barking and Dagenham |
| RM11 | HORNCHURCH | Hornchurch, Emerson Park, Ardleigh Green | Havering |
| RM12 | HORNCHURCH | Hornchurch, Elm Park | Havering |
| RM13 | RAINHAM | Rainham, South Hornchurch, Wennington | Havering |
| RM14 | UPMINSTER | Upminster, Cranham, North Ockendon, Bulphan | Havering, Thurrock |
| RM15 | SOUTH OCKENDON | South Ockendon, Aveley | Havering, Thurrock |
SM – Sutton
| Postcode district | Post town | Coverage | Local authority area |
| SM1 | SUTTON | Sutton, Rosehill, Parts of The Wrythe and Carshalton, Benhilton and Erskine Village, the eastern part of Sutton Common | Sutton |
| SM2 | SUTTON | Belmont, South Sutton, South Cheam, East Ewell | Epsom and Ewell, Reigate and Banstead, Sutton |
| SM3 | SUTTON | The western part of Sutton Common, North Cheam, Stonecot Hill | Sutton, Epsom and Ewell |
| SM4 | MORDEN | Morden, Morden Park, Lower Morden, St. Helier (West), Rosehill | Merton, Sutton |
| SM5 | CARSHALTON | Carshalton, Carshalton Beeches, Carshalton on the Hill, The Wrythe, Rosehill, St. Helier (South), Middleton Circle, Little Woodcote | Sutton |
| SM6 | WALLINGTON | Wallington, Beddington, Hackbridge, Roundshaw | Sutton |
| SM7 | BANSTEAD | Banstead, Woodmansterne, Nork, Little Woodcote | Reigate and Banstead, Sutton |
TN – Tunbridge Wells
| Postcode district | Post town | Coverage | Local authority area |
| TN14 | SEVENOAKS | Cudham, Knockholt, Shoreham, Otford | Bromley, Sevenoaks |
| TN16 | WESTERHAM | Westerham, Biggin Hill, Tatsfield | Sevenoaks, Bromley, Tandridge |
TW – Twickenham
| Postcode district | Post town | Coverage | Local authority area |
| TW1 | TWICKENHAM | Twickenham, St. Margarets, Strawberry Hill (east) | Hounslow, Richmond upon Thames |
| TW2 | TWICKENHAM | Twickenham (west)[n 3], Whitton, Strawberry Hill (west), Fulwell (north) | Richmond upon Thames |
| TW3 | HOUNSLOW | Hounslow, Lampton, Whitton (north) | Hounslow, Richmond upon Thames |
| TW4 | HOUNSLOW | Hounslow West, Hounslow Heath, Whitton (west), Cranford (south) | Hounslow, Richmond upon Thames |
| TW5 | HOUNSLOW | Heston, Cranford (north), Osterley (west) | Hounslow |
| TW6 | HOUNSLOW | Heathrow Airport | Hillingdon |
| TW7 | ISLEWORTH | Isleworth, Osterley (east and centre), Whitton (north) | Hounslow, Richmond upon Thames |
| TW8 | BRENTFORD | Brentford, Brentford Ait, Kew Bridge, Syon Park | Hounslow, Richmond upon Thames |
| TW9 | RICHMOND | Richmond, Kew, North Sheen (north) | Richmond upon Thames |
| TW10 | RICHMOND | Ham, Petersham, Richmond Hill, North Sheen (south), Richmond Park | Kingston upon Thames, Richmond upon Thames |
| TW11 | TEDDINGTON | Teddington, Fulwell (east), Bushy Park | Richmond upon Thames |
| TW12 | HAMPTON | Hampton, Hampton Hill, Fulwell (west) | Richmond upon Thames |
| TW13 | FELTHAM | Feltham (south of the railway line), Hanworth | Hounslow, Richmond upon Thames |
| TW14 | FELTHAM | Feltham (north of the railway line), North Feltham, East Bedfont, Hatton | Hillingdon, Hounslow, Spelthorne |
| TW15 | ASHFORD | Ashford | Hounslow, Spelthorne |
| TW16 | SUNBURY-ON-THAMES | Sunbury-on-Thames | Elmbridge, Richmond upon Thames, Spelthorne |
UB – Uxbridge
| Postcode district | Post town | Coverage | Local authority area |
| UB1 | SOUTHALL | Southall (north) | Ealing |
| UB2 | SOUTHALL | Southall (south), Norwood Green | Ealing, Hounslow |
| UB3 | HAYES | Hayes (south), Harlington | Hillingdon |
| UB4 | HAYES | Hayes (north), Yeading | Hillingdon |
| UB5 | NORTHOLT | Northolt | Ealing, Harrow, Hillingdon |
| UB6 | GREENFORD | Greenford, Perivale | Ealing |
| UB7 | WEST DRAYTON | West Drayton, Harmondsworth, Sipson, Yiewsley, Longford | Hillingdon |
| UB8 | UXBRIDGE | Uxbridge, Cowley, Hillingdon (part) | Hillingdon |
| UB9 | UXBRIDGE | Denham, Harefield | Hillingdon, South Bucks |
| UB10 | UXBRIDGE | Hillingdon, Ickenham | Hillingdon |
| UB11 | UXBRIDGE | Stockley Park | Hillingdon |
WD – Watford
| Postcode district | Post town | Coverage | Local authority area |
| WD3 | RICKMANSWORTH | Rickmansworth, Chorleywood, Croxley Green, Loudwater, Mill End, Maple Cross, Sarratt, Batchworth, Chenies, Harefield (part), West Hyde, Heronsgate, Chandler’s Cross | Three Rivers, Chiltern, Hillingdon |
Walking London one postcode at a time 