SHOW MENUNational System Keyings – Postcodes S to SY
| Keying | Date | Code | Other keying | Place(s) |
|---|---|---|---|---|
| S1 | Original | 23/29 | S1sc | Sheffield 1 |
| 197X | 23/29 | Sheffield | ||
| 1996 (Apr) | 15/64 | SHELD | Sheffield, South Yorkshire | |
| S2 | Original | 23/30 | S2sc | Sheffield 2 |
| 197X | 23/30 | Sheffield | ||
| S3 | Original | 23/31 | S3sc | Sheffield 3 |
| 197X | 23/31 | Sheffield | ||
| S4 | Original | 23/32 | S4sc | Sheffield 4 |
| 197X | 23/32 | Sheffield | ||
| S5 | Original | 23/33 | S5sc | Sheffield 5 |
| 197X | 23/33 | Sheffield | ||
| S6 | Original | 23/34 | S6sc | Sheffield 6 |
| 197X | 23/34 | Sheffield | ||
| S7 | Original | 23/35 | S7sc | Sheffield 7 |
| 197X | 23/35 | Sheffield | ||
| S8 | Original | 23/36 | S8sc | Sheffield 8 |
| 197X | 23/36 | Sheffield | ||
| S9 | Original | 23/37 | S9sc | Sheffield 9 |
| 197X | 23/37 | Sheffield | ||
| S10 | Original | 23/38 | S10sc | Sheffield 10 |
| 197X | 23/38 | Sheffield | ||
| S11 | Original | 23/39 | S11sc | Sheffield 11 |
| 197X | 23/39 | Sheffield | ||
| S12 | Original | 23/40 | S12sc | Sheffield 12 |
| 197X | 23/40 | Sheffield | ||
| S13 | Original | 23/41 | S13sc | Sheffield 13 |
| 197X | 23/41 | Sheffield | ||
| S14 | Original | 23/42 | S14sc | Sheffield 14 |
| 197X | 23/42 | Sheffield | ||
| S17 | Original | 32/35 | Sheffield | |
| S18 | Original | 32/36 | Sheffield | |
| S19 | Original | 32/37 | Sheffield | |
| S20 | NS2013 | 39/19 | Sheffield | |
| S21 | NS2013 | 39/20 | Sheffield | |
| S25 | NS2013 | 39/21 | Sheffield | |
| S26 | NS2013 | 39/22 | Sheffield | |
| S30 | Original | 33/08 | Sheffield | |
| S31 | Original | 33/09 | Sheffield | |
| S32 | NS2013 | 39/23 | Hope Valley, Derbyshire | |
| S33 | NS2013 | 39/24 | Hope Valley, Derbyshire | |
| S35 | NS2013 | 39/25 | Sheffield | |
| S36 | NS2013 | 39/28 | Sheffield | |
| S40 | Original | 52/40 | S41, S44 | Chesterfield, Derbyshire |
| 1996 (Apr) | 06/14 | CHELD | Chesterfield, Derbyshire | |
| NS2013 | 52/40 | Chesterfield, Derbyshire | ||
| S41 | Original | 52/40 | S40, S44 | Chesterfield, Derbyshire |
| 1996 (Apr) | 10/14 | Chesterfield, Derbyshire | ||
| NS2013 | 10/14 | Chesterfield, Derbyshire | ||
| S42 | Original | 52/41 | S43, S45 | Chesterfield, Derbyshire |
| NS2013 | 52/41 | Chesterfield, Derbyshire | ||
| S43 | Original | 52/41 | S42, S45 | Chesterfield, Derbyshire |
| 1996 (Apr) | 10/20 | Chesterfield, Derbyshire | ||
| NS2013 | 10/20 | Chesterfield, Derbyshire | ||
| S44 | Original | 52/40 | S40, S41 | Chesterfield, Derbyshire |
| 1996 (Apr) | 10/17 | Chesterfield, Derbyshire | ||
| NS2013 | 10/17 | Chesterfield, Derbyshire | ||
| S45 | Original | 52/41 | S42, S43 | Chesterfield, Derbyshire |
| 1996 (Apr) | 10/21 | Chesterfield, Derbyshire | ||
| NS2013 | 10/21 | Chesterfield, Derbyshire | ||
| S49 | Original | 62/37 | Sheffield | |
| S60 | Original | 52/42 | S63 | Rotherham, South Yorkshire |
| 1996 (Apr) | 23/48 | ROTAM | Rotherham, South Yorkshire | |
| NS2013 | 52/42 | Rotherham, South Yorkshire | ||
| S61 | Original | 52/44 | S66 | Rotherham, South Yorkshire |
| NS2013 | 52/44 | Rotherham, South Yorkshire | ||
| S62 | Original | 52/43 | S65 | Rotherham, South Yorkshire |
| NS2013 | 52/43 | Rotherham, South Yorkshire | ||
| S63 | Original | 52/42 | S60 | Rotherham, South Yorkshire |
| 1996 (Apr) | 10/28 | Rotherham, South Yorkshire | ||
| NS2013 | 10/28 | Rotherham, South Yorkshire | ||
| S64 | Original | 52/49 | Mexborough, South Yorkshire | |
| 1996 (Apr) | 52/49 | MEXGH | Mexborough, South Yorkshire | |
| S65 | Original | 52/43 | S62 | Rotherham, South Yorkshire |
| 1996 (Apr) | 10/30 | Rotherham, South Yorkshire | ||
| NS2013 | 10/30 | Rotherham, South Yorkshire | ||
| S66 | Original | 52/44 | S61 | Rotherham, South Yorkshire |
| 1996 (Apr) | 10/34 | Rotherham, South Yorkshire | ||
| NS2013 | 10/34 | Rotherham, South Yorkshire | ||
| S69 | Original | 33/36 | Sheffield | |
| S70 | Original | 52/45 | S73 | Barnsley, South Yorkshire |
| 1996 (Apr) | 02/50 | BAREY | Barnsley, South Yorkshire | |
| NS2013 | 52/45 | Barnsley, South Yorkshire | ||
| S71 | Original | 52/46 | S72 | Barnsley, South Yorkshire |
| NS2013 | 52/46 | Barnsley, South Yorkshire | ||
| S72 | Original | 52/46 | S71 | Barnsley, South Yorkshire |
| 1996 (Apr) | 10/37 | Barnsley, South Yorkshire | ||
| NS2013 | 10/37 | Barnsley, South Yorkshire | ||
| S73 | Original | 52/45 | S70 | Barnsley, South Yorkshire |
| 1996 (Apr) | 10/36 | Barnsley, South Yorkshire | ||
| NS2013 | 10/36 | Barnsley, South Yorkshire | ||
| S74 | Original | 52/47 | S75 | Barnsley, South Yorkshire |
| NS2013 | 52/47 | Barnsley, South Yorkshire | ||
| S75 | Original | 52/47 | S74 | Barnsley, South Yorkshire |
| 1996 (Apr) | 10/38 | Barnsley, South Yorkshire | ||
| NS2013 | 10/38 | Barnsley, South Yorkshire | ||
| S80 | Original | 52/48 | S81 | Worksop, Nottinghamshire |
| 1996 (Apr) | 29/36 | WOROP | Worksop, Nottinghamshire | |
| NS2013 | 52/48 | Worksop, Nottinghamshire | ||
| S81 | Original | 52/48 | S80 | Worksop, Nottinghamshire |
| 1996 (Apr) | 10/48 | Worksop, Nottinghamshire | ||
| NS2013 | 10/48 | Worksop, Nottinghamshire | ||
| S96 | NS2013 | 10/44 | Sheffield, bulk users (non-geographic) |
|
| S97 | NS2013 | 17/24 | Sheffield and Rotherham, bulk users (non-geographic) |
|
| S98 | NS2013 | 10/49 | Sheffield, bulk users (non-geographic) |
|
| SA1 | Original | 33/55 | Swansea, West Glamorgan | |
| 1996 (Apr) | 43/01 | SWAEA | Swansea, West Glamorgan | |
| SA2 | Original | 33/56 | Swansea, West Glamorgan | |
| SA3 | Original | 33/57 | Swansea, West Glamorgan | |
| SA4 | Original | 33/58 | Swansea, West Glamorgan | |
| SA5 | Original | 33/59 | Swansea, West Glamorgan | |
| SA6 | Original | 33/60 | Swansea, West Glamorgan | |
| SA7 | Original | 33/61 | Swansea, West Glamorgan | |
| SA8 | Original | 33/62 | Swansea, West Glamorgan | |
| SA9 | Original | 33/63 | Swansea, West Glamorgan | |
| SA10 | Original | 58/07 | SA11 | Neath, West Glamorgan |
| 1996 (Apr) | 17/16 | NEATH | Neath, West Glamorgan | |
| NS2013 | 58/07 | Neath, West Glamorgan | ||
| SA11 | Original | 58/07 | SA10 | Neath, West Glamorgan |
| 1996 (Apr) | 12/35 | Neath, West Glamorgan | ||
| NS2013 | 12/35 | Neath, West Glamorgan | ||
| SA12 | Original | 58/08 | SA13 | Port Talbot, West Glamorgan |
| 1996 (Apr) | 19/13 | POROT | Port Talbot, West Glamorgan | |
| NS2013 | 58/08 | Port Talbot, West Glamorgan | ||
| SA13 | Original | 58/08 | SA12 | Port Talbot, West Glamorgan |
| 1996 (Apr) | 12/49 | Port Talbot, West Glamorgan | ||
| NS2013 | 12/49 | Port Talbot, West Glamorgan | ||
| SA14 | Original | 58/09 | SA15 | Llanelli, Dyfed |
| 1996 (Apr) | 14/53 | LLALI | Llanelli, Dyfed | |
| NS2013 | 58/09 | Llanelli, Dyfed | ||
| SA15 | Original | 58/09 | SA14 | Llanelli, Dyfed |
| 1996 (Apr) | 12/50 | Llanelli, Dyfed | ||
| NS2013 | 12/50 | Llanelli, Dyfed | ||
| SA16 | Original | 58/10 | Burry Port, Dyfed | |
| 1996 (Apr) | 58/10 | BURRT | Burry Port, Dyfed | |
| SA17 | Original | 58/11 | Kidwelly, Dyfed | |
| SA18 | Original | 58/12 | Ammanford, Dyfed | |
| 1996 (Apr) | 58/12 | AMMRD | Ammanford, Dyfed | |
| SA19 | Original | 58/13 | Llangadog, Dyfed | |
| SA20 | Original | 58/14 | Llandovery, Dyfed | |
| 1996 (Apr) | 58/14 | LLARY | Llandovery, Dyfed | |
| SA31 | Original | 38/02 | SA32, SA33 | Carmarthen, Dyfed |
| 1996 (Apr) | 05/42 | CAREN | Carmarthen, Dyfed | |
| NS2013 | 38/02 | Carmarthen, Dyfed | ||
| SA32 | Original | 38/02 | SA31, SA33 | Carmarthen, Dyfed |
| 1996 (Apr) | 06/24 | Carmarthen, Dyfed | ||
| NS2013 | 06/24 | Carmarthen, Dyfed | ||
| SA33 | Original | 38/02 | SA31, SA32 | Carmarthen, Dyfed |
| 1996 (Apr) | 06/25 | Carmarthen, Dyfed | ||
| NS2013 | 06/25 | Carmarthen, Dyfed | ||
| SA34 | Original | 28/54 | WHIND | Whitland, Dyfed |
| NS2013 | 28/54 | Whitland, Dyfed | ||
| SA35 | Original | 39/04 | Llanfyrnach, Dyfed | |
| SA36 | Original | 10/27 | GLOUE | Glogue, Dyfed |
| NS2013 | 10/27 | Glogue, Dyfed | ||
| SA37 | Original | 03/61 | BONTH | Boncath, Dyfed |
| NS2013 | 03/61 | Boncath, Dyfed | ||
| SA38 | Original | 17/25 | NEWYN | Newcastle Emlyn, Dyfed |
| NS2013 | 17/25 | Newcastle Emlyn, Dyfed | ||
| SA39 | Original | 18/24 | PENER | Pencader, Dyfed |
| NS2013 | 18/24 | Pencader, Dyfed | ||
| SA40 | Original | 38/03 | Llanybyther, Dyfed | |
| 1996 (Apr) | 38/03 | LLAER | Llanybyther, Dyfed | |
| SA41 | Original | 07/35 | CRYCH | Crymmych, Dyfed |
| NS2013 | 07/35 | Crymmych, Dyfed | ||
| SA42 | Original | 38/04 | Newport, Dyfed | |
| SA43 | Original | 05/43 | CARAN | Cardigan, Dyfed |
| NS2013 | 05/43 | Cardigan, Dyfed | ||
| SA44 | Original | 39/02 | Llandyssul, Dyfed | |
| 1996 (Apr) | 39/02 | LLAUL | Llandyssul, Dyfed | |
| SA45 | Original | 39/03 | New Quay, Dyfed | |
| SA46 | Original | 01/05 | ABEON | Aberaeron, Dyfed |
| NS2013 | 01/05 | Aberaeron, Dyfed | ||
| SA47 | Original | 14/42 | LLATH | Llanarth, Dyfed |
| NS2013 | 14/42 | Llanarth, Dyfed | ||
| SA48 | Original | 13/49 | LAMER | Lampeter, Dyfed |
| NS2013 | 13/49 | Lampeter, Dyfed | ||
| SA61 | Original | 40/64 | SA62 | Haverfordwest, Dyfed |
| 1996 (Apr) | 11/25 | HAVST | Haverfordwest, Dyfed | |
| NS2013 | 39/64 | Haverfordwest, Dyfed | ||
| SA62 | Original | 40/64 | SA61 | Haverfordwest, Dyfed |
| 1996 (Apr) | 07/29 | Haverfordwest, Dyfed | ||
| NS2013 | 07/29 | Haverfordwest, Dyfed | ||
| SA63 | Original | 06/31 | CLAAD | Clarbeston Road, Dyfed |
| NS2013 | 06/31 | Clarbeston Road, Dyfed | ||
| SA64 | Original | 10/33 | GOOCK | Goodwick, Dyfed |
| NS2013 | 10/33 | Goodwick, Dyfed | ||
| SA65 | Original | 09/47 | FISRD | Fishguard, Dyfed |
| NS2013 | 09/47 | Fishguard, Dyfed | ||
| SA66 | Original | 06/38 | CLYEN | Clynderwen, Dyfed |
| NS2013 | 06/38 | Clynderwen, Dyfed | ||
| SA67 | Original | 17/15 | NARTH | Narberth, Dyfed |
| NS2013 | 17/15 | Narberth, Dyfed | ||
| SA68 | Original | 13/13 | KILTY | Kilgetty, Dyfed |
| NS2013 | 13/13 | Kilgetty, Dyfed | ||
| SA69 | Original | 24/39 | SAUOT | Saundersfoot, Dyfed |
| NS2013 | 24/39 | Saundersfoot, Dyfed | ||
| SA70 | Original | 26/52 | TENBY | Tenby, Dyfed |
| NS2013 | 26/52 | Tenby, Dyfed | ||
| SA71 | Original | 18/21 | PEMKE | Pembroke, Dyfed |
| NS2013 | 18/21 | Pembroke, Dyfed | ||
| SA72 | Original | 18/22 | PEMCK | Pembroke Dock, Dyfed |
| NS2013 | 18/22 | Pembroke Dock, Dyfed | ||
| SA73 | Original | 16/36 | MILEN | Milford Haven, Dyfed |
| NS2013 | 16/36 | Milford Haven, Dyfed | ||
| SA99 | Original | 58/64 | Swansea, West Glamorgan | |
| NS2013 | 57/64 | |||
| SE1 | Original | 30/22 | SE1sc | London SE1 |
| 1996 (Apr) | 41/42 | London SE | ||
| NS2013 | 30/22 | London SE1 | ||
| SE2 | Original | 30/23 | SE2sc | London SE2 |
| SE3 | Original | 30/24 | SE3sc | London SE3 |
| NS2013 | 30/24 | London SE3 | ||
| SE4 | Original | 30/25 | SE4sc | London SE4 |
| NS2013 | 30/25 | London SE4 | ||
| SE5 | Original | 30/26 | SE5sc | London SE5 |
| NS2013 | 30/26 | London SE5 | ||
| SE6 | Original | 30/27 | SE6sc | London SE6 |
| NS2013 | 30/27 | London SE6 | ||
| SE7 | Original | 30/28 | SE7sc | London SE7 |
| NS2013 | 30/28 | London SE7 | ||
| SE8 | Original | 30/29 | SE8sc | London SE8 |
| NS2013 | 30/29 | London SE8 | ||
| SE9 | Original | 30/30 | SE9sc | London SE9 |
| NS2013 | 30/30 | London SE9 | ||
| SE10 | Original | 30/31 | SE10sc | London SE10 |
| NS2013 | 30/31 | London SE10 | ||
| SE11 | Original | 30/32 | SE11sc | London SE11 |
| NS2013 | 30/32 | London SE11 | ||
| SE12 | Original | 30/33 | SE12sc | London SE12 |
| NS2013 | 30/33 | London SE12 | ||
| SE13 | Original | 30/34 | SE13sc | London SE13 |
| NS2013 | 30/34 | London SE13 | ||
| SE14 | Original | 30/35 | SE14sc | London SE14 |
| NS2013 | 30/35 | London SE14 | ||
| SE15 | Original | 30/36 | SE15sc | London SE15 |
| NS2013 | 30/36 | London SE15 | ||
| SE16 | Original | 30/37 | SE16sc | London SE16 |
| NS2013 | 30/37 | London SE16 | ||
| SE17 | Original | 30/38 | SE17sc | London SE17 |
| NS2013 | 30/38 | London SE17 | ||
| SE18 | Original | 30/39 | SE18sc | London SE18 |
| NS2013 | 30/39 | London SE18 | ||
| SE19 | Original | 30/40 | SE19sc | London SE19 |
| NS2013 | 30/40 | London SE19 | ||
| SE20 | Original | 30/41 | SE20sc | London SE20 |
| NS2013 | 30/41 | London SE20 | ||
| SE21 | Original | 30/42 | SE21sc | London SE21 |
| NS2013 | 30/42 | London SE21 | ||
| SE22 | Original | 30/43 | SE22sc | London SE22 |
| NS2013 | 30/43 | London SE22 | ||
| SE23 | Original | 30/44 | SE23sc | London SE23 |
| NS2013 | 30/44 | London SE23 | ||
| SE24 | Original | 30/45 | SE24sc | London SE24 |
| NS2013 | 30/45 | London SE24 | ||
| SE25 | Original | 30/46 | SE25sc | London SE25 |
| NS2013 | 30/46 | London SE25 | ||
| SE26 | Original | 30/47 | SE26sc | London SE26 |
| NS2013 | 30/47 | London SE26 | ||
| SE27 | Original | 30/48 | SE27sc | London SE27 |
| NS2013 | 30/48 | London SE27 | ||
| SE28 | Original | 31/35 | SE28sc | London SE28 |
| NS2013 | 31/35 | London SE28 | ||
| SE99 | Original | 30/49 | London SE | |
| SG1 | Original | 49/08 | Stevenage, Hertfordshire | |
| 1996 (Apr) | 25/52 | STEGE | Stevenage, Hertfordshire | |
| SG2 | Original | 49/09 | Stevenage, Hertfordshire | |
| SG3 | Original | 49/10 | Knebworth, Hertfordshire | |
| 1996 (Apr) | 49/10 | KNETH | Knebworth, Hertfordshire | |
| SG4 | Original | 49/11 | Hitchin, Hertfordshire | |
| 1996 (Apr) | 11/62 | HITIN | Hitchin, Hertfordshire | |
| SG5 | Original | 49/12 | Hitchin, Hertfordshire | |
| SG6 | Original | 49/13 | Letchworth, Hertfordshire | |
| 1996 (Apr) | 49/13 | LETTH | Letchworth, Hertfordshire | |
| SG7 | Original | 49/14 | Baldock, Hertfordshire | |
| 1996 (Apr) | 49/14 | BALCK | Baldock, Hertfordshire | |
| SG8 | Original | 49/15 | Royston, Hertfordshire | |
| 1996 (Apr) | 49/15 | ROYON | Royston, Hertfordshire | |
| SG9 | Original | 05/10 | BUNRD | Buntingford, Hertfordshire |
| NS2013 | 05/10 | Buntingford, Hertfordshire | ||
| SG10 | Original | 17/05 | MUCAM | Much Hadham, Hertfordshire |
| NS2013 | 17/05 | Much Hadham, Hertfordshire | ||
| SG11 | Original | 07/03 | SG12 | Ware, Hertfordshire |
| 1996 (Apr) | 28/18 | WARRE | Ware, Hertfordshire | |
| NS2013 | 07/03 | Ware, Hertfordshire | ||
| SG12 | Original | 07/03 | SG11 | Ware, Hertfordshire |
| 1996 (Apr) | 01/45 | Ware, Hertfordshire | ||
| NS2013 | 01/45 | Ware, Hertfordshire | ||
| SG13 | Original | 07/04 | SG14 | Hertford, Hertfordshire |
| 1996 (Apr) | 41/41 | Hertford, Hertfordshire | ||
| NS2013 | 07/04 | Hertford, Hertfordshire | ||
| SG14 | Original | 07/04 | SG13 | Hertford, Hertfordshire |
| 1996 (Apr) | 01/49 | Hertford, Hertfordshire | ||
| NS2013 | 01/49 | Hertford, Hertfordshire | ||
| SG15 | Original | 01/52 | ARLEY | Arlesey, Bedfordshire |
| NS2013 | 01/52 | Arlesey, Bedfordshire | ||
| SG16 | Original | 11/48 | HENOW | Henlow, Bedfordshire |
| NS2013 | 11/48 | Henlow, Bedfordshire | ||
| SG17 | Original | 24/62 | SHERD | Shefford, Bedfordshire |
| NS2013 | 24/62 | Shefford, Bedfordshire | ||
| SG18 | Original | 03/30 | BIGDE | Biggleswade, Bedfordshire |
| NS2013 | 03/30 | Biggleswade, Bedfordshire | ||
| SG19 | Original | 24/36 | SANDY | Sandy, Bedfordshire |
| NS2013 | 24/36 | Sandy, Bedfordshire | ||
| SK1 | Original | 35/08 | Stockport, Cheshire | |
| 1996 (Apr) | 41/40 | Stockport,Cheshire | ||
| SK2 | Original | 35/09 | Stockport, Cheshire | |
| SK3 | Original | 35/10 | Stockport, Cheshire | |
| SK4 | Original | 35/11 | Stockport, Cheshire | |
| SK5 | Original | 35/12 | Stockport, Cheshire | |
| SK6 | Original | 35/13 | Stockport, Cheshire | |
| SK7 | Original | 35/14 | Stockport, Cheshire | |
| SK8 | Original | 35/15 | Cheadle, Cheshire | |
| 1996 (Apr) | 35/15 | CHELE | Cheadle, Cheshire | |
| SK9 | Original | 35/16 | Alderley Edge, Cheshire | |
| SK10 | Original | 35/17 | Macclesfield, Cheshire | |
| 1996 (Apr) | 15/49 | MACLD | Macclesfield, Cheshire | |
| SK11 | Original | 35/18 | Macclesfield, Cheshire | |
| SK12 | Original | 35/19 | Macclesfield, Cheshire | |
| SK13 | Original | 35/20 | Glossop, Derbyshire | |
| 1996 (Apr) | 35/20 | GLOOP | Glossop, Derbyshire | |
| SK14 | Original | 35/21 | Hyde, Cheshire | |
| 1996 (Apr) | 35/21 | HYDDE | Hyde, Cheshire | |
| SK15 | Original | 35/22 | Staleybridge, Cheshire | |
| 1996 (Apr) | 35/22 | STAGE | Staleybridge, Cheshire | |
| SK16 | Original | 35/23 | Dukinfield, Cheshire | |
| 1996 (Apr) | 35/23 | DUKLD | Dukinfield, Cheshire | |
| SK17 | Original | 05/23 | BUXON | Buxton, Derbyshire |
| NS2013 | 05/23 | Buxton, Derbyshire | ||
| SK22 | NS2013 | 06/10 | High Peak, Derbyshire | |
| SK23 | NS2013 | 06/20 | High Peak, Derbyshire | |
| SL0 | Original | 47/41 | Iver, Buckinghamshire | |
| 1996 (Apr) | 47/41 | IVEER | Iver, Buckinghamshire | |
| SL1 | Original | 47/32 | Slough, Berkshire | |
| 1996 (Apr) | 55/01 | SLOGH | Slough, Berkshire | |
| SL2 | Original | 47/33 | Slough, Berkshire | |
| SL3 | Original | 47/34 | Slough, Berkshire | |
| SL4 | Original | 47/35 | Windsor, Berkshire | |
| 1996 (Apr) | 47/35 | WINOR | Windsor, Berkshire | |
| SL5 | Original | 47/36 | Ascot, Berkshire | |
| 1996 (Apr) | 47/36 | ASCOT | Ascot, Berkshire | |
| SL6 | Original | 47/37 | Maidenhead, Berkshire | |
| 1996 (Apr) | 47/37 | MAIAD | Maidenhead, Berkshire | |
| SL7 | Original | 47/38 | Marlow, Buckinghamshire | |
| 1996 (Apr) | 47/38 | MAROW | Marlow, Buckinghamshire | |
| SL8 | Original | 47/39 | Bourne End, Buckinghamshire | |
| 1996 (Apr) | 47/39 | BOUND | Bourne End, Buckinghamshire | |
| SL9 | Original | 47/40 | Gerrards Cross, Buckinghamshire | |
| 1996 (Apr) | 47/40 | GERSS | Gerrards Cross, Buckinghamshire | |
| SM1 | Original | 41/02 | SM2, SM3 | Sutton, Surrey |
| 1996 (Apr) | 41/39 | Sutton, Surrey | ||
| NS2013 | 41/02 | Sutton, Surrey | ||
| SM2 | Original | 41/02 | SM1, SM3 | Sutton, Surrey |
| 1996 (Apr) | 07/37 | Sutton, Surrey | ||
| NS2013 | 07/37 | Sutton, Surrey | ||
| SM3 | Original | 07/39 | CUPAR | Cupar, Fife |
| Original | 41/02 | SM1, SM2 | Sutton, Surrey | |
| 1996 (Apr) | 07/38 | Sutton, Surrey | ||
| NS2013 | 07/38 | Sutton, Surrey | ||
| SM4 | Original | 16/57 | MOREN | Morden, Surrey |
| NS2013 | 16/57 | Morden, Surrey | ||
| SM5 | Original | 41/03 | Carshalton, Surrey | |
| SM6 | Original | 41/04 | Wallington, Surrey | |
| SM7 | Original | 02/44 | BANAD | Banstead, Surrey |
| 20XX? | 02/44 | Banstead, Surrey | ||
| SN1 | Original | 51/23 | SN5, SN6 | Swindon, Wiltshire |
| 1984 | 51/23 | Swindon, Wiltshire | ||
| 1996 (Apr) | 26/31 | SWION | Swindon, Wiltshire | |
| SN2 | Original | 51/24 | SN4 | Swindon, Wiltshire |
| 1984 | 51/24 | Swindon, Wiltshire | ||
| SN3 | Original | 51/25 | Swindon, Wiltshire | |
| SN4 | Original | 51/24 | SN2 | Swindon, Wiltshire |
| 1984 | 51/49 | Swindon, Wiltshire | ||
| SN5 | Original | 51/23 | SN1, SN6 | Swindon, Wiltshire |
| 1984 | 51/50 | Swindon, Wiltshire | ||
| SN6 | Original | 51/23 | SN1, SN5 | Swindon, Wiltshire |
| 198? | 16/19 | Swindon rural, Wiltshire | ||
| 1984 | 51/51 | Swindon, Wiltshire | ||
| SN7 | Original | 51/26 | Faringdon, Oxfordshire | |
| 1996 (Apr) | 51/26 | FARON | Faringdon, Oxfordshire | |
| SN8 | Original | 51/27 | Marlborough, Wiltshire | |
| SN9 | Original | 51/28 | Pewsey, Wiltshire | |
| 1996 (Apr) | 51/28 | PEWEY | Pewsey, Wiltshire | |
| SN10 | Original | 51/29 | Devizes, Wiltshire | |
| 1996 (Apr) | 51/29 | DEVES | Devizes, Wiltshire | |
| SN11 | Original | 05/30 | CALNE | Calne, Wiltshire [to 1972] Calvine, Perthshire |
| Original | 51/30 | Calne, Wiltshire | ||
| 1996 (Apr) | 51/30 | CALNE | Calne, Wiltshire | |
| SN12 | Original | 51/45 | Melksham, Wiltshire | |
| 1996 (Apr) | 51/45 | MELAM | Melksham, Wiltshire | |
| SN13 | Original | 51/46 | Corsham, Wiltshire | |
| SN14 | Original | 51/47 | SN15 | Chippenham, Wiltshire |
| 1996 (Apr) | 06/18 | CHIAM | Chippenham, Wiltshire | |
| NS2013 | 51/47 | Chippenham, Wiltshire | ||
| SN15 | Original | 51/47 | SN14 | Chippenham, Wiltshire |
| 1996 (Apr) | 09/53 | Chippenham, Wiltshire | ||
| NS2013 | 09/53 | Chippenham, Wiltshire | ||
| SN16 | Original | 51/48 | Malmesbury, Wiltshire | |
| 1996 (Apr) | 51/48 | MALRY | Malmesbury, Wiltshire | |
| SN17 | NS2013 | 51/51 | Swindon, Wiltshire (non-geographic) |
|
| SN25 | NS2013 | 51/40 | Swindon, Wiltshire | |
| SN26 | NS2013 | 51/44 | Swindon, Wiltshire | |
| SN38 | NS2013 | 07/30 | Swindon, Wiltshire (non-geographic) |
|
| SN42 | NS2013 | 11/30 | Swindon, Wiltshire (non-geographic) |
|
| SN86 | NS2013 | 13/20 | Swindon, Wiltshire (non-geographic) |
|
| SN87 | NS2013 | 13/21 | Swindon, Wiltshire (non-geographic?) |
|
| SN99 | Original | 51/64 | SNXsc | Swindon X, Wiltshire |
| NS2013 | 50/64 | Swindon, Wiltshire (non-geographic) |
||
| SO1 | Original | 23/43 | Southampton, Hampshire | |
| SO2 | Original | 23/44 | Southampton, Hampshire | |
| SO3 | Original | 38/31 | Southampton, Hampshire | |
| SO4 | Original | 23/45 | Southampton, Hampshire | |
| NS2013 | 23/45 | Southampton, Hampshire | ||
| SO5 | Original | 23/46 | Southampton, Hampshire | |
| SO9 | Original | 23/47 | Southampton, Hampshire | |
| SO10 | Original | 40/05 | SOUOW | South Harrow, Middlesex |
| SO14 | Original | 59/04 | Southampton, Hampshire | |
| 1996 (Apr) | 41/38 | Southampton, Hampshire | ||
| SO15 | 1994 | 59/05 | Southampton, Hampshire | |
| SO16 | 1994 | 59/06 | Southampton, Hampshire | |
| SO17 | 1994 | 59/07 | Southampton, Hampshire | |
| SO18 | 1994 | 59/08 | Southampton, Hampshire | |
| SO19 | 1994 | 59/09 | Southampton, Hampshire | |
| SO20 | Original | 28/02 | Southampton, Hampshire | |
| SO21 | Original | 28/03 | SO22, SO23 | Winchester, Hampshire |
| 1996 (Apr) | 29/11 | WINER | Winchester, Hampshire | |
| NS2013 | 28/03 | Winchester, Hampshire | ||
| SO22 | Original | 28/03 | SO21, SO23 | Winchester, Hampshire |
| 1996 (Apr) | 04/26 | Winchester, Hampshire | ||
| NS2013 | 04/27 | Winchester, Hampshire | ||
| SO23 | Original | 28/03 | SO21, SO22 | Winchester, Hampshire |
| 1996 (Apr) | 04/31 | Winchester, Hampshire | ||
| NS2013 | 04/31 | Winchester, Hampshire | ||
| SO24 | Original | 01/29 | ALRRD | Alresford, Hampshire |
| NS2013 | 01/29 | Alresford, Hampshire | ||
| SO30 | 1994 | 62/04 | Southampton, Hampshire | |
| SO31 | 1994 | 62/05 | Southampton, Hampshire | |
| SO32 | 1994 | 62/06 | Southampton, Hampshire | |
| SO40 | 1994 | 62/07 | Southampton, Hampshire | |
| SO41 | 1983 | 15/42 | LYMON | Lymington, Hampshire |
| NS2013 | 15/42 | Lymington, Hampshire | ||
| SO42 | 1985 | 04/44 | BROST | Brockenhurst, Hampshire |
| NS2013 | 04/44 | Brockenhurst, Hampshire | ||
| SO43 | 1983 | 15/44 | LYNST | Lyndhurst, Hampshire |
| NS2013 | 15/44 | Lyndhurst, Hampshire | ||
| SO45 | 1994 | 62/08 | Southampton, Hampshire | |
| SO50 | 1994 | 63/02 | Eastleigh, Hampshire | |
| SO51 | 1983 | 23/46 | Southampton, Hampshire | |
| SO52 | 1985 | 48/21 | Southampton, Hampshire | |
| SO53 | 1993? | 08/57 | EASGH | Eastleigh, Hampshire |
| 1994 | 63/03 | Eastleigh, Hampshire | ||
| SP1 | Original | 02/03 | SP2, SP3 | Salisbury, Wiltshire |
| 1996 (Apr) | 04/37 | Salisbury, Wiltshire | ||
| 1996 (Apr) | 24/29 | SALRY | Salisbury, Wiltshire | |
| NS2013 | 02/03 | Salisbury, Wiltshire | ||
| SP2 | Original | 02/03 | SP1, SP3 | Salisbury, Wiltshire |
| 1996 (Apr) | 01/11 | Salisbury, Wiltshire | ||
| NS2013 | 01/11 | Salisbury, Wiltshire | ||
| SP3 | Original | 02/03 | SP1, SP2 | Salisbury, Wiltshire |
| 1996 (Apr) | 01/19 | Salisbury, Wiltshire | ||
| NS2013 | 01/19 | Salisbury, Wiltshire | ||
| SP4 | Original | 02/04 | SP5 | Salisbury, Wiltshire |
| NS2013 | 02/04 | Salisbury, Wiltshire | ||
| SP5 | Original | 02/04 | SP4 | Salisbury, Wiltshire |
| 1996 (Apr) | 01/21 | Salisbury, Wiltshire | ||
| NS2013 | 01/21 | Salisbury, Wiltshire | ||
| SP6 | Original | 09/54 | FORGE | Fordingbridge, Hampshire |
| NS2013 | 09/54 | Fordingbridge, Hampshire | ||
| SP7 | Original | 24/59 | SHARY | Shaftsbury, Dorset |
| NS2013 | 24/59 | Shaftsbury, Dorset | ||
| SP8 | Original | 27/64 | Gillingham, Dorset | |
| SP9 | Original | 27/05 | TIDTH | Tidworth, Hampshire |
| NS2013 | 27/05 | Tidworth, Hampshire | ||
| SP10 | Original | 28/64 | SP11 | Andover, Hampshire |
| 1996 (Apr) | 01/39 | ANDER | Andover, Hampshire | |
| NS2013 | 27/64 | Andover, Hampshire | ||
| SP11 | Original | 28/64 | SP10 | Andover, Hampshire |
| NS2013 | 04/37 | Andover, Hampshire | ||
| SR1 | Original | 44/21 | Sunderland, Tyne and Wear | |
| 1996 (Apr) | 53/01 | SUNND | Sunderland, Tyne and Wear | |
| SR2 | Original | 44/22 | Sunderland, Tyne and Wear | |
| SR3 | Original | 44/23 | Sunderland, Tyne and Wear | |
| SR4 | Original | 44/24 | Sunderland, Tyne and Wear | |
| SR5 | Original | 44/25 | Sunderland, Tyne and Wear | |
| SR6 | Original | 44/26 | Sunderland, Tyne and Wear | |
| SR7 | Original | 44/27 | Seaham, Co.Durham | |
| 1996 (Apr) | 44/27 | SEAAM | Seaham, Co.Durham | |
| SR8 | Original | 44/28 | Peterlee, Co.Durham | |
| SR9 | Original | 44/29 | Sunderland X, Tyne and Wear | |
| SR43 | NS2013 | 07/14 | Sunderland, Tyne and Wear (non-geographic) |
|
| SR88 | 1990 (Feb) | 42/18 | Sunderland, large users | |
| SS0 | Original | 43/63 | Westcliff on Sea, Essex | |
| 1996 (Apr) | 43/63 | WESFF | Westcliff (on Sea), Essex | |
| SS1 | Original | 43/54 | Southend on Sea, Essex | |
| 1996 (Apr) | 41/37 | Southend on Sea, Essex | ||
| SS2 | Original | 43/55 | Southend on Sea, Essex | |
| SS3 | Original | 43/56 | G.Wakering, Essex | |
| SS4 | Original | 43/57 | Rochford, Essex | |
| 1996 (Apr) | 43/57 | ROCRD | Rochford, Essex | |
| SS5 | Original | 43/58 | Hockley, Essex | |
| 1996 (Apr) | 43/58 | HOCEY | Hockley, Essex | |
| SS6 | Original | 43/59 | Rayleigh, Essex | |
| 1996 (Apr) | 43/59 | RAYGH | Rayleigh, Essex | |
| SS7 | Original | 43/60 | Benfleet, Essex | |
| 1996 (Apr) | 43/60 | BENET | Benfleet, Essex | |
| SS8 | Original | 43/61 | Canvey Island, Essex | |
| 1996 (Apr) | 43/61 | CANEY | Canvey Island, Essex | |
| SS9 | Original | 43/62 | Leigh on Sea, Essex | |
| 1996 (Apr) | 43/62 | LEIEA | Leigh on Sea, Essex | |
| SS11 | Original | 06/03 | SS12 | Wickford, Essex |
| 1996 (Apr) | 28/59 | WICRD | Wickford, Essex | |
| NS2013 | 06/03 | Wickford, Essex | ||
| SS12 | Original | 06/03 | SS11 | Wickford, Essex |
| 1996 (Apr) | 01/38 | Wickford, Essex | ||
| NS2013 | 01/38 | Wickford, Essex | ||
| SS13 | Original | 06/04 | SS16 | Basildon, Essex |
| 1996 (Apr) | 02/54 | BASON | Basildon, Essex | |
| NS2013 | 06/04 | Basildon, Essex | ||
| SS14 | Original | 07/02 | SS15 | Basildon, Essex |
| NS2013 | 07/02 | Basildon, Essex | ||
| SS15 | Original | 07/02 | SS14 | Basildon, Essex |
| 1996 (Apr) | 01/41 | Basildon, Essex | ||
| NS2013 | 01/41 | Basildon, Essex | ||
| SS16 | Original | 06/04 | SS13 | Basildon, Essex |
| 1996 (Apr) | 01/40 | Basildon, Essex | ||
| NS2013 | 01/40 | Basildon, Essex | ||
| SS17 | Original | 25/48 | STAPE | Stanford le Hope, Essex |
| NS2013 | 25/48 | Stanford le Hope, Essex | ||
| SS22 | NS2013 | 25/53 | ||
| SS99 | Original | 40/50 | Southend on Sea, Essex | |
| ST1 | Original | 36/11 | Stoke on Trent, Staffordshire | |
| 1996 (Apr) | 45/01 | STONT | Stoke on Trent, Stafforshire | |
| ST2 | Original | 36/12 | Stoke on Trent, Staffordshire | |
| ST3 | Original | 36/13 | Stoke on Trent, Staffordshire | |
| ST4 | Original | 36/14 | Stoke on Trent, Staffordshire | |
| ST5 | Original | 36/15 | Stoke on Trent, Staffordshire | |
| ST6 | Original | 36/16 | Stoke on Trent, Staffordshire | |
| ST7 | Original | 36/17 | Stoke on Trent, Staffordshire | |
| ST8 | Original | 36/18 | Stoke on Trent, Staffordshire | |
| ST9 | Original | 36/19 | Stoke on Trent, Staffordshire | |
| ST10 | Original | 36/20 | Stoke on Trent, Staffordshire | |
| ST11 | Original | 36/21 | Stoke on Trent, Staffordshire | |
| ST12 | Original | 36/22 | Stoke on Trent, Staffordshire | |
| ST13 | Original | 36/23 | Leek, Staffordshire | |
| 1996 (Apr) | 36/23 | LEEEK | Leek, Staffordshire | |
| ST14 | Original | 36/24 | Uttoxeter, Staffordshire | |
| 1996 (Apr) | 36/24 | UTTER | Uttoxeter, Staffordshire | |
| ST15 | Original | 36/25 | Stone, Staffordshire | |
| 1996 (Apr) | 36/25 | STONE | Stone, Staffordshire | |
| ST16 | Original | 08/02 | ST17 | Stafford, Staffordshire |
| 1996 (Apr) | 25/46 | STARD | Stafford, Staffordshire | |
| NS2013 | 08/02 | Stafford, Staffordshire | ||
| ST17 | Original | 08/02 | ST16 | Stafford, Staffordshire |
| 1996 (Apr) | 01/57 | Stafford, Staffordshire | ||
| NS2013 | 01/57 | Stafford, Staffordshire | ||
| ST18 | Original | 08/03 | Stafford, Staffordshire | |
| NS2013 | 08/03 | Stafford, Staffordshire | ||
| ST19 | Original | 08/04 | ST20 | Stafford, Staffordshire |
| NS2013 | 08/04 | Stafford, Staffordshire | ||
| ST20 | Original | 08/04 | ST19 | Stafford, Staffordshire |
| 1996 (Apr) | 01/58 | Stafford, Staffordshire | ||
| NS2013 | 01/58 | Stafford, Staffordshire | ||
| ST21 | Original | 09/02 | Stafford, Staffordshire | |
| SW1 | Original | 30/50 | SW1sc | London SW1 |
| SW1A | Original | 49/44 | London SW | |
| 1996 (Apr) | 41/35 | London SW | ||
| SW1E | Original | 49/45 | London SW | |
| SW1H | Original | 49/46 | London SW | |
| SW1P | Original | 49/47 | London SW | |
| SW1V | Original | 49/48 | London SW | |
| SW1W | Original | 49/49 | London SW | |
| SW1X | Original | 49/50 | London SW | |
| SW1Y | Original | 49/51 | London SW | |
| SW2 | Original | 30/51 | SW2sc | London SW2 |
| 1996 (Apr) | 41/34 | London SW | ||
| NS2013 | 30/51 | London SW2 | ||
| SW3 | Original | 30/52 | SW3sc | London SW3 |
| NS2013 | 30/52 | London SW3 | ||
| SW4 | Original | 30/53 | SW4sc | London SW4 |
| NS2013 | 30/53 | London SW4 | ||
| SW5 | Original | 30/54 | SW5sc | London SW5 |
| NS2013 | 30/54 | London SW5 | ||
| SW6 | Original | 30/55 | SW6sc | London SW6 |
| NS2013 | 30/55 | London SW6 | ||
| SW7 | Original | 30/56 | SW7sc | London SW7 |
| NS2013 | 30/56 | London SW7 | ||
| SW8 | Original | 30/57 | SW8sc | London SW8 |
| NS2013 | 30/57 | London SW8 | ||
| SW9 | Original | 30/58 | SW9sc | London SW9 |
| NS2013 | 30/58 | London SW9 | ||
| SW10 | Original | 30/59 | SW10sc | London SW10 |
| NS2013 | 30/59 | London SW10 | ||
| SW11 | Original | 30/60 | SW11sc | London SW11 |
| NS2013 | 30/60 | London SW11 | ||
| SW12 | Original | 30/61 | SW12sc | London SW12 |
| NS2013 | 30/61 | London SW12 | ||
| SW13 | Original | 30/62 | SW13sc | London SW13 |
| NS2013 | 30/62 | London SW13 | ||
| SW14 | Original | 30/63 | SW14sc | London SW14 |
| NS2013 | 30/63 | London SW14 | ||
| SW15 | Original | 31/05 | SW15sc | London SW15 |
| NS2013 | 31/05 | London SW15 | ||
| SW16 | Original | 31/06 | SW16sc | London SW16 |
| NS2013 | 31/06 | London SW16 | ||
| SW17 | Original | 31/07 | SW17sc | London SW17 |
| NS2013 | 31/07 | London SW17 | ||
| SW18 | Original | 31/08 | SW18sc | London SW18 |
| NS2013 | 31/08 | London SW18 | ||
| SW19 | Original | 31/09 | SW19sc | London SW19 |
| NS2013 | 31/09 | London SW19 | ||
| SW20 | Original | 31/10 | SW20sc | London SW20 |
| NS2013 | 31/10 | London SW20 | ||
| SW99 | 19XX | 64/04 | London SW | |
| SY1 | Original | 45/39 | Shrewsbury, Shropshire | |
| 1996 (Apr) | 41/01 | SHRRY | Shrewsbury, Shropshire | |
| SY2 | Original | 45/40 | Shrewsbury, Shropshire | |
| SY3 | Original | 45/41 | Shrewsbury, Shropshire | |
| SY4 | Original | 45/42 | Shrewsbury, Shropshire | |
| SY5 | Original | 45/43 | Shrewsbury, Shropshire | |
| SY6 | Original | 45/44 | Church Stretton, Shropshire | |
| 1996 (Apr) | 45/44 | CHUON | Church Stretton, Shropshire | |
| SY7 | Original | 45/45 | Bucknall, Shropshire | |
| SY8 | Original | 45/46 | Ludlow, Shropshire | |
| 1996 (Apr) | 45/46 | LUDOW | Ludlow, Shropshire | |
| SY9 | Original | 45/47 | Bishops Castle, Shropshire | |
| 1996 (Apr) | 45/47 | BISLE | Bishops Castle, Shropshire | |
| SY10 | Original | 45/48 | Oswestry, Shropshire | |
| 1996 (Apr) | 18/11 | OSWRY | Oswestry, Shropshire | |
| SY11 | Original | 45/49 | Oswestry, Shropshire | |
| SY12 | Original | 45/50 | Ellesmere, Shropshire | |
| 1996 (Apr) | 45/50 | ELLRE | Ellesmere, Shropshire | |
| SY13 | Original | 45/51 | Whitchurch, Shropshire | |
| SY14 | Original | 45/52 | Malpas, Cheshire | |
| 1996 (Apr) | 45/52 | MALAS | Malpas, Cheshire | |
| SY15 | Original | 45/53 | Montgomery, Powys | |
| 1996 (Apr) | 45/53 | MONRY | Montgomery, Powys | |
| SY16 | Original | 45/54 | Newtown, Powys | |
| 1996 (Apr) | 45/54 | NEWWN | Newtown, Powys | |
| SY17 | Original | 45/55 | Caersws, Powys | |
| SY18 | Original | 45/56 | Llanidloes, Powys | |
| 1996 (Apr) | 45/56 | LLAES | Llanidloes, Powys | |
| SY19 | Original | 45/57 | Llanbrynmair, Powys | |
| 1996 (Apr) | 45/57 | LLAIR | Llanbrynmair, Powys | |
| SY20 | Original | 45/58 | Machynlleth, Powys | |
| 1996 (Apr) | 45/58 | MACTH | Machynlleth, Powys | |
| SY21 | Original | 45/59 | Welshpool, Powys | |
| 1996 (Apr) | 45/59 | WELOL | Welshpool, Powys | |
| SY22 | Original | 45/60 | Llanfyllin, Powys | |
| SY23 | Original | 45/61 | Aberystwyth, Dyfed | |
| SY24 | Original | 45/62 | Borth, Dyfed | |
| SY25 | Original | 45/63 | Tregaron, Dyfed |
