Below is a list of the exchanges linked to the upgrade work completed on the 2nd July to help IPStream customers experienceing slow speeds. Click the following link to read the update in full:
| Exchange ID | EXCHANGE NAME | Exchange ID | EXCHANGE NAME | |
| EMABBOT | ABBOTS BROMLEY | SWLLP | LLANARTH | |
| EMABRIP | ABBOTS RIPTON | WNLBG | LLANBEDROG | |
| SWAAI | ABERAERON | SWLJV | LLANBOIDY | |
| SWAAV | ABERCRAVE | WNLMR | LLANBRYNMAIR | |
| SWABT | ABERCYNON | SWLDR | LLANDDAROG | |
| SWAA | ABERDARE | SWLKB | LLANDEILO | |
| WNADR | ABERDARON | SWLKD | LLANDOVERY | |
| WNADV | ABERDOVEY | WNLW | LLANDRINDOD WELLS | |
| SWAG | ABERGAVENNY | SWLYJ | LLANDYBIE | |
| SWAAZ | ABERKENFIG | SWLY | LLANDYSSUL | |
| WNAMU | ABERMULE | SWLLD | LLANEDEYRN | |
| SWAPO | ABERPORTH | SWLJ | LLANELLI | |
| SWABD | ABERTILLERY | SWLYA | LLANFRYNACH | |
| WNAE | ABERYSTWYTH | SWLKY | LLANGADOG | |
| SSABS | ABSON | WNLGW | LLANGAMMARCH WELLS | |
| CMACK | ACKLETON | WNLGO | LLANGEITHO | |
| CMACO | ACOCKS GREEN | SWLLG | LLANGENNECH | |
| WMADB | ADBASTON | SWUGI | LLANGENNITH | |
| SWAEN | AERON | SWUGU | LLANGORSE | |
| CMALB | ALBRIGHTON | SWLGC | LLANGRANOG | |
| CMALC | ALCESTER | SWLQW | LLANGYBI | |
| CMALDM | ALDERMINSTER | WNLNS | LLANIDLOES | |
| SSADN | ALDERTON | WNLAR | LLANILAR | |
| CMALD | ALDRIDGE | WNLON | LLANON | |
| CMALL | ALLESLEY | SWLPI | LLANPUMSAINT | |
| EMALREW | ALREWAS | WNLRD | LLANRHAEADR | |
| THATN | ALTON | SWSZX | LLANRUMNEY | |
| SSAMB | AMBERLEY | SWLLM | LLANSTEFFAN | |
| SWAVY | AMMAN VALLEY | SWUAZ | LLANTEG | |
| SWADW | AMMANFORD | SWLLF | LLANTILIO | |
| SSAFD | ANDOVERSFORD | SWLLO | LLANTRISANT | |
| SWAGL | ANGLE | SWLLR | LLANTWIT MAJOR | |
| EMARKWR | ARKWRIGHT | SWUWN | LLANWERN | |
| WMARL | ARLEY | WNLWW | LLANWRTYD WELLS | |
| CMARM | ARMITAGE | SWLLU | LLANYBYDDER | |
| EMASFOR | ASFORDBY | SWUHN | LLAWHADEN | |
| WWASHC | ASHCOTT | SWLLW | LLECHRYD | |
| CMASHF | ASHFIELD | SWLNN | LLWYNDRAIN | |
| WNASH | ASHLEY | SWLYW | LLYSWEN | |
| WWASHR | ASHREIGNEY | EMLNGBU | LONG BUCKBY | |
| WMAUH | ASHTON UNDER HILL | SSLOP | LONGHOPE | |
| STASHST | ASHURST | SWLCA | LONGTOWN CASTLE | |
| SMATL | ASTHALL LEIGH | WNLVL | LONGVILLE | |
| CMASTX | ASTON CROSS | EMLGHBO | LOUGHBOROUGH | |
| WMAST | ASTWOOD BANK | EMLUTTE | LUTTERWORTH | |
| EMAYLES | AYLESTONE | SSLDY | LYDNEY | |
| WMBAD | BADSEY | CMLYE | LYE | |
| EMBGWOR | BAGWORTH | WNLYO | LYONSHALL | |
| SWQKL | BANCYFELIN | SWMAD | MACHEN | |
| CMBARF | BARFORD | SWMDX | MADOX | |
| SWQJA | BARGOED | SWMGX | MAENCLOCHOG | |
| SSBWD | BARNWOOD | SWMES | MAESGLAS | |
| SWCFK | BARRY | SWMAL | MAESTEG | |
| WNBH | BAYSTON HILL | SWMYU | MAESYCRUGIAU | |
| CMBEAC | BEACON | SWMGR | MAGOR | |
| CMBEAR | BEARWOOD | SWMDE | MAINDEE | |
| EMBEAUM | BEAUMONT | WNMAP | MALPAS | |
| SWQOE | BEDLINOG | WMMAL | MALVERN | |
| CMBED | BEDWORTH | SWMNF | MANORBIER | |
| EMBEEST | BEESTON | EMMNTON | MANTON | |
| WMBBN | BELBROUGHTON | EMMARKB | MARKET BOSWORTH | |
| EMBELGR | BELGRAVE | WNMD | MARKET DRAYTON | |
| EMBLLTO | BELTON | SWMWY | MARTLETWY | |
| SSBKE | BERKELEY | CMMART | MARTON | |
| CMBER | BERKSWELL | SWMYS | MAYALS | |
| WMBEW | BEWDLEY | EMMEDBO | MEDBOURNE GREEN | |
| CMBIDF | BIDFORD ON AVON | EMMELTN | MELTON MOWBRAY | |
| EMBILLE | BILLESDON | EMMERES | MERESIDE | |
| CMBIL | BILSTON | CMMER | MERIDEN | |
| CMBIN | BINLEY | SWMYG | MERTHYR CYNOG | |
| CMBIR | BIRCHFIELD | SWMT/EX | MERTHYR TYDFIL | |
| SSBMN | BIRTSMORTON | WMMIC | MICKLETON | |
| WMBIS | BISHAMPTON | CMMID | MIDDLETON SCRIVEN | |
| WNBIS | BISHOPS CASTLE | CMMLD | MIDLAND | |
| SSBCL | BISHOPS CLEEVE | WMMFD | MILFORD | |
| SWQTI | BISHOPSTON | SWMF | MILFORD HAVEN | |
| SSBSY | BISLEY | SSMWH | MINSTERWORTH | |
| CMBLAC | BLACKHEATH | SWMU | MONMOUTH | |
| WMBLS | BLACKSHAW | WNMFB | MONTFORD BRIDGE | |
| SWBIG | BLACKWOOD | EMMONTF | MONTFORT | |
| SWBII | BLAENAVON | WNMON | MONTGOMERY | |
| SWBIK | BLAINA | CMMORT | MORETON MORRELL | |
| WMBLA | BLAKEDOWN | SWMLZ | MORRISTON | |
| SSBKY | BLAKENEY | CMMOR | MORVILLE | |
| EMBLAKE | BLAKESLEY | SWMMN | MOUNTAIN ASH | |
| WMBLO | BLOCKLEY | SWMYE | MOYLEGROVE | |
| CMBOB | BOBBINGTON | WNMM | MUCH MARCLE | |
| WNBDM | BODENHAM | WNMUC | MUCH WENLOCK | |
| WNBOM | BOMERE HEATH | SWMMV | MUMBLES | |
| SWQCT | BONCATH | WNMSL | MUNSLOW | |
| SWBJY | BONVILSTON | SSNAH | NAILSWORTH | |
| WNBOR | BORTH | SWNNA | NANTGAREDIG | |
| SSBOW | BOURTON ON-THE-WATER | SWNTD | NANTYDERRY | |
| WNBS | BOW STREET | SWNB | NARBERTH | |
| WMBRA | BRADLEY | EMNARBO | NARBOROUGH | |
| EMBRAUN | BRAUNSTONE | SWNM | NEATH | |
| WWBRAY | BRAYFORD | WNNEB | NEBO | |
| WWBREA | BREAN DOWN | SWNSN | NELSON | |
| SWQFJ | BRECHFA | EMNETHB | NETHER BROUGHTON | |
| SWBNB | BRECON | SSNRD | NETHEREND | |
| SSBRN | BREDON | SWNDU | NEW QUAY | |
| CMBRE | BREWOOD | WNNR | NEW RADNOR | |
| WNBRI | BRIDGE SOLLARS | SWNBI | NEWBRIDGE | |
| WMBGM | BRIDGEMERE | WNNOW | NEWBRIDGE-ON-WYE | |
| SWBNP | BRIDGEND | SWNEN | NEWCASTLE EMLYN | |
| CMBRI | BRIDGNORTH | SSNWT | NEWENT | |
| CMBYL | BRIERLEY HILL | WNNBG | NEWNHAM BRIDGE | |
| EMBRIGS | BRIGSTOCK | SWNE/CH | NEWPORT CHARTIST | |
| SSBRI | BRIMSCOMBE | SWNDO | NEWPORT DYFED | |
| SSBRW | BRINKWORTH | SWNE/EX | NEWPORT SAVOY | |
| SWBPG | BRITON FERRY | WNNN | NEWTOWN | |
| SWQHV | BROADHAVEN | SWNVW | NEWTOWN LLANTWIT | |
| WMBDY | BROADWAY | SWNES | NEYLAND | |
| CMBRO | BROADWELL | SSNCN | NORTH CERNEY | |
| CMBKN | BROCKTON | WWNPTN | NORTH PETHERTON | |
| WNBRB | BROMESBERROW | WWNPWI | NORTH PETHERWIN | |
| WMBPZ | BROMSGROVE | CMNOR | NORTHERN | |
| WNBRN | BRONANT | SSNLH | NORTHLEACH | |
| WNBRS | BROSELEY | EMLONGB | NOTTINGHAM LONGBOW | |
| CMBRU | BROWNHILLS | CMNUN | NUNEATON | |
| SWBSE | BRYNMAWR | EMODDBY | OADBY | |
| EMBUCKM | BUCKMINSTER | WMOAK | OAKAMOOR | |
| WNBUK | BUCKNELL | WNOAK | OAKENGATES | |
| WNBW | BUILTH WELLS | EMOAKHA | OAKHAM | |
| CMBNW | BURNTWOOD | SSOGB | OGBOURNE ST GEORGE | |
| SWBUD | BURRY PORT | SWOAG | OGMORE VALLEY | |
| CMBWN | BURWARTON | WMOMB | OMBERSLEY | |
| SWQOB | BWLCH | WMONE | ONECOTE | |
| EMBYTHO | BYTHORN | SSOVY | OVERBURY | |
| SWCAA | CAERLEON | CMPAI | PAILTON | |
| SWCAB | CAERPHILLY | SSPWK | PAINSWICK | |
| SWCIT | CALDICOT | CMPAT | PATTINGHAM | |
| CMCAL | CALTHORPE | WMPAX | PAXFORD | |
| SSCGE | CAMBRIDGE | EMPEATL | PEATLING MAGNA | |
| WMCAM | CAMPDEN | CMPEB | PEBWORTH | |
| SWZFR | CAMROSE | CMPEL | PELSALL | |
| CMCAN | CANNOCK | WNPEM | PEMBRIDGE | |
| WNCBG | CAPEL BANGOR | SWPM | PEMBROKE | |
| SWCFATE | CARDIFF EMPIRE | SWPBM | PENARTH | |
| SWCG | CARDIGAN | SWPEC | PENCADER | |
| SWZIU | CAREW | SWPBL | PENCLAWDD | |
| SWCT | CARMARTHEN | SWPND | PENCOED | |
| WNCRN | CARNO | SWPEV | PENDINE | |
| SWZMX | CASTLEMARTIN | SWPHX | PENHOW | |
| SWCTE | CASTLETON | WMPKR | PENKRIDGE | |
| WNCER | CEMMAES ROAD | SWPMQ | PENMAEN | |
| CMCEN | CENTRAL | CMPEN | PENN | |
| WMCHA | CHADDESLEY CORBETT | WNPNL | PENNAL | |
| CMCHAP | CHAPEL END | SWPTY | PENTYRCH | |
| SMCBY | CHARLBURY | WMPEO | PEOPLETON | |
| WMCHD | CHEADLE | WMPER | PERSHORE | |
| CMCHEL | CHELMSLEY WOOD | SWPRU | PETERSTON-SUPER-ELY | |
| SSCMN | CHELTENHAM | SSPIL | PILL | |
| SWCJ | CHEPSTOW | EMPLUMT | PLUMTREE | |
| CMCHY | CHESLYN HAY | WWPLRN | POLRUAN | |
| CMCHEY | CHEYLESMORE | SWPDU | PONTARDAWE | |
| WNCHB | CHIRBURY | SWPDW | PONTARDULAIS | |
| WWCHIS | CHISELBOROUGH | WNPTW | PONTERWYD | |
| WNCSK | CHURCH STOKE | WNPON | PONTESBURY | |
| WNCST | CHURCH STRETTON | WNPRD | PONTRHYDFENDIGAID | |
| SSCHN | CHURCHDOWN | WNPRG | PONTRHYDYGROES | |
| SSCIN | CINDERFORD | WNPRL | PONTRILAS | |
| SSCIR | CIRENCESTER | SWPOM | PONTSHAEN | |
| SWZNR | CLARBESTON | SWPYH | PONTYATES | |
| CMCLAV | CLAVERDON | SWPTM | PONTYBEREM | |
| CMCLA | CLAVERLEY | SWPEK | PONTYCYMMER | |
| WNCLE | CLEEHILLSTONE | SWPP | PONTYPOOL | |
| WMCBM | CLEOBURY MORTIMER | SWPN | PONTYPRIDD | |
| EMCLIFT | CLIFTON CAMPVILLE | WWPORL | PORLOCK | |
| SMCTN | CLIFTON HAMPDEN | SWPTB | PORT TALBOT | |
| EMCLIPS | CLIPSTON | SWPTH | PORTH | |
| EMCLOPT | CLOPTON | SWPEU | PORTHCAWL | |
| WMCLO | CLOWS TOP | WMPOW | POWICK | |
| SWZEN | CLUNDERWEN | WNPG | PRESTEIGNE | |
| SWCJW | CLYDACH | CMPRI | PRIORY | |
| SSCOB | COBERLEY | SWPQS | PUMPSAINT | |
| WNCOC | COCKSHUTT | SWPUN | PUNCHESTON | |
| CMCOD | CODSALL | CMQUA | QUATT | |
| SSCOL | COLEFORD | EMQURRN | QUORN | |
| CMCOLE | COLESHILL | CMRAD | RADFORD | |
| SSCAS | COLN ST ALDWYN | SWRAG | RAGLAN | |
| WMCOL | COLWALL | SWRVH | RAVENHILL | |
| WWCMAR | COMBE MARTIN | EMRRSBB | REARSBY | |
| WWCWIC | COMBWICH | CMREC | RECTORY | |
| WNCRR | CORRIS | SSRED | REDCLIFFE | |
| WMCOT | COTHERIDGE | WMRJ | REDDITCH | |
| EMCOTTE | COTTESMORE | EMRPTON | REPTON | |
| CMCGF | COVENTRY | SWRSV | RESOLVEN | |
| SWCNE | COWBRIDGE | SWRHA | RHANDIRMWYN | |
| CMCRA | CRADLEY HEATH | WNRAY | RHAYADER | |
| EMCRANF | CRANFORD | SWRWI | RHIWDERIN | |
| CMCRI | CRICK | SWRHR | RHOOSE | |
| SWCOO | CRICKHOWELL | SWRSO | RHOS | |
| SWZZH | CROESGOCH | WNRNR | RHOSNEIGR | |
| SMCRP | CROPREDY | SWRLS | RHYDLEWIS | |
| WMCRO | CROPTHORNE | SWRDA | RHYMNEY | |
| SWZKA | CROSS ASH | WMRID | RIDGEWAY CROSS | |
| WNCH | CROSS HOUSES | SWRDX | RISCA | |
| SWZKS | CROSS KEYS | SWRTH | ROATH | |
| SWCXX | CROSSHANDS | WMROK | ROCK | |
| SWZWJ | CROSSWELL | WMROM | ROMSLEY | |
| WNCRD | CROSSWOOD | WNROW | ROSS-ON-WYE | |
| EMCROXT | CROXTON | EMROTTB | ROTHERBY | |
| WWCROY | CROYDE | EMRTHLY | ROTHLEY | |
| SWLCY | CRUCORNEY | EMROTHW | ROTHWELL | |
| SWZIY | CRYMYCH | CMRUB | RUBERY | |
| SWZNT | CRYNANT | WMRUD | RUDYARD | |
| WNCKO | CUCKOO OAK | WMRUG | RUGELEY | |
| SWCUV | CULVERHOUSE | WWSALT | SALTASH | |
| CMCUR | CURDWORTH | SSSFD | SALTFORD | |
| WMCUT | CUTNALL GREEN | WNSAM | SAMBROOK | |
| SWZWM | CWM | WMSAN | SANDON | |
| SWCRS | CWMBRAN | EMSPCOT | SAPCOTE | |
| SWCWN | CWRTNEWYDD | SSSAL | SAUL | |
| SWCYX | CYMMER | SWSDV | SAUNDERSFOOT | |
| SWZYY | CYNGHORDY | CMSED | SEDGLEY | |
| SWZLD | CYNWYL ELFED | CMSEL | SELLY OAK | |
| EMDAVEN | DAVENTRY | SWXNH | SENGHENYDD | |
| EMDSSFO | DESFORD | SWSVB | SENNYBRIDGE | |
| SWDCP | DINAS CROSS | SWSSQ | SEVEN SISTERS | |
| SWDPW | DINAS POWYS | WMSEV | SEVERN STOKE | |
| SWDWQ | DINGESTOW | WNSHA | SHAWBURY | |
| CMDIT | DITTON PRIORS | CMSHEL | SHELDON | |
| WNDOR | DORRINGTON | WMSHB | SHELSLEY BEAUCHAMP | |
| SSDOW | DOWNEND | CMSHE | SHENSTONE | |
| WMDRO | DROITWICH | EMSHEPS | SHEPSHED | |
| CMDRU | DRUIDS HEATH | WNSHI | SHIFNAL | |
| SSDBK | DRYBROOK | SMSH | SHIPSTON ON STOUR | |
| SWDRW | DRYSLWYN | SWXSX | SHIRENEWTON | |
| CMDD | DUDLEY | CMSHI | SHIRLEY | |
| WWDUNS | DUNSTER | WWSHIR | SHIRWELL | |
| SSDSY | DURSLEY | WNSY | SHREWSBURY | |
| EMDUSTO | DUSTON | SSSHN | SHURDINGTON | |
| SSDYK | DYMOCK | EMSLEBY | SILEBY | |
| WNEAR | EARDISLEY | EMSILVE | SILVERSTONE | |
| WNERD | EARDISTON | SWSFJ | SKENFRITH | |
| EMERRSS | EARL SHILTON | SWSKJ | SKETTY | |
| CMEARD | EARLSDON | SWSKU | SKEWEN | |
| CMEARL | EARLSWOOD | CMSMBK | SMALLBROOK | |
| CMEAS | EAST | WMSMA | SMALLWOOD | |
| STEASTE | EAST END | CMSME | SMETHWICK | |
| EMESSTL | EAST LANGTON | CMSNI | SNITTERFIELD | |
| EMESTLE | EAST LEAKE | CMSOL | SOLIHULL | |
| EMEASWI | EAST WIGSTON | CMSOUB | SOUTH | |
| SWEBY | EBBW VALE | SSSHC | SOUTH CERNEY | |
| WMECC | ECCLESHALL | WWSPET | SOUTH PETHERTON | |
| WMECK | ECKINGTON | CMSOUC | SOUTHAM | |
| CMEDG | EDGBASTON | SWSMX | SOUTHERNDOWN | |
| SSEDI | EDINGWORTH | WMSPE | SPETCHLEY | |
| CMELMD | ELMDON | CMSPR | SPRINGFIELD | |
| WMELM | ELMLEY CASTLE | WNSA | ST ASAPH | |
| EMEMPIN | EMPINGHAM | SWXTP | ST ATHAN | |
| CMETT | ETTINGTON | EMSTBBS | ST BARNABAS | |
| WWEVER | EVERSHOT | SSSBL | ST BRIAVELS | |
| WMEV | EVESHAM | SWSAS | ST CLEARS | |
| EMEVING | EVINGTON | SWSAW | ST DAVIDS | |
| WWEXBO | EXBOURNE | WMSTJ | ST JOHNS | |
| WWEXFO | EXFORD | SWSNI | ST NICHOLAS | |
| CMEXH | EXHALL | WMSTP | ST PETERS | |
| WWEXMN | EXMINSTER | WMSPA | STAFFORD | |
| CMFAL | FALLINGS PARK | WWSTAL | STALBRIDGE | |
| SMFB | FARNBOROUGH | CMSFD | STANDEFORD | |
| STFAWLY | FAWLEY | WMSTA | STANTON | |
| EMFAZEL | FAZELEY | SSSTN | STAUNTON COURT | |
| SWFBX | FERNDALE | CMSTE | STECHFORD | |
| WMFER | FERNHILL HEATH | WNSTI | STIRCHLEY | |
| SWFBZ | FERRYSIDE | WWSTOC | STOCKLAND | |
| CMFIL | FILLONGLEY | EMSTKEG | STOKE GOLDING | |
| SSFLT | FILTON | WMSTK | STOKE ON TRENT | |
| CMFIN | FINCHFIELD | CMSTOX | STONE CROSS | |
| SWFCJ | FISHGUARD | SSSHE | STONEHOUSE | |
| SDFTTLW | FITTLEWORTH | SMSNF | STONESFIELD | |
| CMFOL | FOLESHILL | EMSTNYG | STONEYGATE | |
| CMFOR | FORDHOUSES | CMSON | STOTTESDON | |
| STFORDB | FORDINGBRIDGE | CMSTB | STOURBRIDGE | |
| EMFOSDY | FOSDYKE | WMSTU | STOURPORT | |
| SSFBE | FOSSEBRIDGE | SSSWD | STOW ON THE WOLD | |
| CMFOU | FOUR OAKS | CMSTRA | STRATFORD ON AVON | |
| WWFOWE | FOWEY | SSSTD | STROUD | |
| CMFRA | FRADLEY | WMSTD | STUDLEY | |
| SSFTM | FRAMPTON MANSELL | WMSUC | SUCKLEY | |
| WWFROG | FROGMORE | SMSG | SULGRAVE | |
| CMFUR | FURNACE END | SWXUU | SULLY | |
| EMGADDE | GADDESBY | EMSRFLT | SURFLEET | |
| WWGERM | GERMOE | CMSUT | SUTTON COLDFIELD | |
| STGILGM | GILLINGHAM | EMSTTEL | SUTTON ELMS | |
| SWGAR | GILWERN | EMSWADL | SWADLINCOTE | |
| SWGLN | GLANTAWE | STSWANG | SWANAGE | |
| WNGLB | GLASBURY | SWSX | SWANSEA MAIN | |
| EMGLNFI | GLENFIELD | EMSWATN | SWATON | |
| SSGLR | GLOUCESTER | CMSWI | SWINFORD | |
| WNGLC | GLYN CERIOG | WMSWY | SWYNNERTON | |
| SWGBG | GLYNNEATH | SWWCP | SYMONDS YAT | |
| SWLKX | GOBION | SWTAT | TAFFS WELL | |
| SDGDSHL | GODSHILL | SWTAF | TALGARTH | |
| SWGBY | GORSEINON | SWTLL | TALLEY | |
| WNGOR | GORSLEY | WNTAL | TALYBONT | |
| EMGSCTE | GOSCOTE | SWTLU | TALYBONT ON USK | |
| SWGWR | GOWER | SWTAJ | TALYWAIN | |
| SWGC | GOWERTON | EMTMWOR | TAMWORTH | |
| CMGREA | GREAT ALNE | WNTW | TENBURY WELLS | |
| CMGREB | GREAT BARR | SWTB | TENBY | |
| EMGRTGL | GREAT GLEN | CMTET | TETTENHALL | |
| SMGM | GREAT MISSENDEN | SSTXY | TEWKESBURY | |
| SMGT | GREAT TEW | EMTHURL | THURLASTON | |
| WMGRE | GREAT WITLEY | EMTHRNB | THURNBY | |
| WWGHAM | GREENHAM | SSTBN | TIBBERTON | |
| WNGW | GWALCHMAI | CMTIL | TILE HILL | |
| SWGWN | GWYNFE | SWTDE | TINTERN | |
| WNHAD | HADNALL | CMTIP | TIPTON | |
| WMHAG | HAGLEY | SSTRY | TIRLEY | |
| CMHALE | HALESOWEN | CMTOL | TOLL BAR | |
| EMHLLTO | HALLATON | SWTDU | TONYPANDY | |
| WMHAL | HALLOW | SWTRF | TONYREFAIL | |
| CMHAMP | HAMPTON IN ARDEN | WWTORQ | TORQUAY | |
| WMHAM | HAMSTALL RIDWARE | WWTORR | TORRINGTON | |
| WMHAN | HANBURY | SWTR | TREDEGAR | |
| WMHSW | HANLEY SWAN | SWTUC | TREDUNNOCK | |
| WNHAN | HANWOOD | WNTFG | TREFEGLWYS | |
| CMHARBO | HARBORNE | SWTRH | TREFFGARNE | |
| CMHARBU | HARBURY | SWTFS | TREFOREST | |
| SSHWK | HARDWICKE | WNTRY | TREGYNON | |
| EMHRLST | HARLASTON | SWTEZ | TREHARRIS | |
| WNHAT | HARLESCOTT | SWTEK | TRELLECK | |
| WMHAR | HARTLEBURY | SWTFA | TREORCHY | |
| SSHPY | HARTPURY | SWTSA | TRIMSARAN | |
| WMHAV | HARVINGTON | SSTWG | TWIGWORTH | |
| CMHASN | HASELEY KNOB | WNTYW | TYWYN | |
| EMHTHER | HATHERN | SSULY | ULEY | |
| SDHVNT | HAVANT | SWUCW | UPPER CWMTWRCH | |
| SWHV | HAVERFORDWEST | WMUPS | UPPER SAPEY | |
| WNHAY | HAY-ON-WYE | EMUPPIN | UPPINGHAM | |
| WWHTOR | HAYTOR | WNUB | UPTON BISHOP | |
| WMHX | HEADLESS CROSS | WNUM | UPTON MAGNA | |
| CMHEA | HEATH HAYES | WMUSN | UPTON SNODSBURY | |
| SWYRO | HEBRON | WMUUS | UPTON UPON SEVERN | |
| CMHED | HEDNESFORD | SWUAH | USK | |
| SWHXM | HENGOED | SWVLD | VELINDRE | |
| CMHEN | HENLEY IN ARDEN | CMVIC | VICTORIA | |
| WNHR | HEREFORD | EMWALGR | WALGRAVE ST PETERS | |
| CMHIGH | HIGHBURY | CMWL | WALSALL | |
| CMHIG | HIGHLEY | CMWAL | WALSGRAVE ON SOWE | |
| CMHIGW | HIGHWAY | EMWLTHA | WALTHAM ON THE WOLDS | |
| WMHIL | HILDERSTONE | NEWR | WARK | |
| CMHILL | HILLSIDE | WMWAR | WARMINGHAM | |
| WMHIM | HIMBLETON | CMWARW | WARWICK | |
| EMHINCK | HINCKLEY | WWWASH | WASHFORD | |
| SWHJL | HIRWAUN | CMWED | WEDNESBURY | |
| EMHOLSJ | HOLBEACH ST JOHNS | EMWELFO | WELFORD | |
| WMHOL | HOLLINGTON | CMWEL | WELFORD | |
| WNHLN | HOLLINSWOOD | CMWEE | WELLESBOURNE | |
| CMHOR | HORSELEY FIELDS | WNWEL | WELLINGTON | |
| EMHUBBE | HUBBERTS BRIDGE | WNWPL | WELSHPOOL | |
| EMHURLE | HURLEY | WNWEM | WEM | |
| EMHUSBB | HUSBANDS BOSWORTH | EMWERRI | WERRINGTON | |
| WMINK | INKBERROW | CMWESB | WEST BROMWICH | |
| WMIPS | IPSLEY | EMWESSW | WEST WIGSTON | |
| CMJAM | JAMES BRIDGE | SSWOS | WESTBURY ON SEVERN | |
| SWJOH | JOHNSTON | WMWES | WESTON | |
| EMKGWOR | KEGWORTH | WMWET | WETTENHALL | |
| SSKMB | KEMBLE | EMWHAPL | WHAPLODE DROVE | |
| WMKEM | KEMPSEY | WMWHE | WHEATON ASTON | |
| SWKGH | KENFIG HILL | EMWHISS | WHISSENDINE | |
| CMKEN | KENILWORTH | SWWXC | WHITCHURCH | |
| CMKER | KERESLEY | WNWCH | WHITCHURCH | |
| WNKER | KERRY | SSWTC | WHITECROFT | |
| EMKBWOR | KIBWORTH | SWWHT | WHITLAND | |
| WMKD | KIDDERMINSTER | CMWHY | WHITTINGTON | |
| SWKW | KIDWELLY | WNWXL | WHIXALL | |
| WWKILK | KILKHAMPTON | WMWIC | WICHENFORD | |
| CMKINE | KINETON | SWWJK | WICK | |
| CMKING | KINGS NORTON | WNWIG | WIGMORE | |
| WNKNG | KINGSLAND | CMWIL | WILLENHALL | |
| CMKWD | KINGSWINFORD | SSWHE | WINCHCOMBE | |
| WNKIN | KINGTON | EMWINWI | WINWICK | |
| WMKLT | KINLET | SSWCE | WITCOMBE | |
| CMKVR | KINVER | EMWIOTH | WITHAM ON THE HILL | |
| EMKRBYM | KIRBY MUXLOE | CMWOL | WOLSTON | |
| EMKISLI | KISLINGBURY | CMWV | WOLVERHAMPTON | |
| WMKNI | KNIGHTWICK | WMWLY | WOLVERLEY | |
| CMKNO | KNOWLE | SWVVW | WOLVESNEWTON | |
| WNKYR | KYRE | EMWLVEY | WOLVEY | |
| SWLAK | LAMPETER | CMWOM | WOMBOURNE | |
| SWLHY | LAMPHEY | CMWDGT | WOODGATE | |
| CMLAP | LAPWORTH | EMWDHOU | WOODHOUSE EAVES | |
| SWLAS | LAUGHARNE | WMWR | WORCESTER | |
| WNLEA | LEA | CMWOR | WORFIELD | |
| CMLGS | LEAMINGTON SPA | WNWTN | WORTHEN | |
| CMLEA | LEAMORE | SSWUE | WOTTON UNDER EDGE | |
| WNLED | LEDBURY | WMWYC | WYCHBOLD | |
| EMCENTL | LEICESTER CENTRAL | EMWYSWO | WYMESWOLD | |
| WMLEI | LEIGH SINTON | EMWMNDH | WYMONDHAM | |
| EMLERRE | LEIRE | CMWYT | WYTHALL | |
| WNLEO | LEOMINSTER | EMYARDL | YARDLEY HASTINGS | |
| SWLDV | LETTERSTON | EMYXLEY | YAXLEY | |
| WNLEY | LEYSTERS | SWYDU | YNYSDDU | |
| CMLIC | LICHFIELD | SWYYN | YNYSOWEN | |
| WNLIT | LITTLE BRAMPTON | SWYBL | YNYSYBWL | |
| SWUTK | LITTLE MILL | CMYOX | YOXALL | |
| WNLNO | LLANANNO |