A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
| Nearest Place | District | ELRs |
|---|---|---|
| Oak Hill | Hampshire - Eastleigh | SDP1 |
| Oak Hill Park | Liverpool | DSE , OME3 |
| Oak Tree | Darlington | DSN1 |
| Oakamoor | Staffordshire - Staffordshire Moorlands | CVL |
| Oakbank | West Lothian | ECA2 , EGS2 |
| Oaken | Staffordshire - South Staffordshire | WSJ2 |
| Oakengates | Telford and Wrekin | WSJ2 |
| Oakenholt | Flintshire | CNH3 |
| Oakenshaw | Kirklees | MRB |
| Oakerthorpe | Derbyshire - Amber Valley | SPC8 |
| Oakeswell End | Sandwell | DPJ |
| Oakfield | Hertfordshire - North Hertfordshire | ECM1 |
| Oakfield | Isle of Wight | IOW |
| Oakfield | Torfaen | HNL1 |
| Oakgrove | Cheshire East | CMD1 |
| Oakham | Rutland | GSM2 |
| Oakhanger | Cheshire East | KCS1 |
| Oakhill | West Sussex - Horsham | TBH1 |
| Oaklands | Hertfordshire - Welwyn Hatfield | ECM1 |
| Oakle Street | Gloucestershire - Forest of Dean | SWM2 |
| Oakleigh Park | Greater London - Barnet | ECM1 |
| Oakley | Bedford | SPC2 |
| Oakley | Hampshire - Basingstoke and Deane | BAE1 , BML1 |
| Oakley | Oxfordshire - South Oxfordshire | PRC |
| Oakmere | Cheshire West and Chester | CDM2 |
| Oakridge Lynch | Gloucestershire - Stroud | SWM1 |
| Oaksey | Wiltshire | SWM1 |
| Oaktree Hill | North Yorkshire - Hambleton | ECM5 |
| Oakwood | Warrington | MAJ |
| Oath | Somerset - South Somerset | CCL |
| Oatlands | North Yorkshire - Harrogate | LEH3 |
| Oatlands Park | Surrey - Elmbridge | BML1 |
| Oban | Argyll and Bute | OBN2 |
| Oborne | Dorset - West Dorset | BAE2 |
| Obridge | Somerset - Taunton Deane | MLN1 , WTZ |
| Occlestone Green | Cheshire West and Chester | CGJ1 |
| Ochiltree | East Ayrshire | KCH2 |
| Ockford Ridge | Surrey - Waverley | WPH1 |
| Oddendale | Cumbria - Eden | CGJ7 |
| Oddingley | Worcestershire - Wychavon | BAG2 |
| Oddington | Oxfordshire - Cherwell | OXD |
| Odsey | Cambridgeshire - South Cambridgeshire | SBR |
| Offerton | Derbyshire - Derbyshire Dales | MAS |
| Offham | East Sussex - Lewes | KJE1 |
| Offham | Kent - Tonbridge and Malling | SBJ |
| Offmore Farm | Worcestershire - Wyre Forest | OWW |
| Offord Cluny | Cambridgeshire - Huntingdonshire | ECM1 |
| Offord D’Arcy | Cambridgeshire - Huntingdonshire | ECM1 |
| Ogston | Derbyshire - North East Derbyshire | SPC8 |
| Okehampton | Devon - West Devon | DAC |
| Old Arley | Warwickshire - North Warwickshire | NWO |
| Old Basford | City of Nottingham | RAC |
| Old Basing | Hampshire - Basingstoke and Deane | BML1 |
| Old Bexley | Greater London - Bexley | HDR |
| Old Bilton | North Yorkshire - Harrogate | HAY2 |
| Old Bishton | Gloucestershire - Forest of Dean | SWM2 , WYE |
| Old Brumby | North Lincolnshire | DOW |
| Old Cambus | Scottish Borders | ECM8 |
| Old Cleeve | Somerset - West Somerset | MIN |
| Old Colwyn | Conwy | CNH3 |
| Old Craighall | East Lothian | MHL2 , MHL3 , MHL4 , NDE1 |
| Old Dailly | South Ayrshire | STR1 |
| Old Dalby | Leicestershire - Melton | GSM4 |
| Old Denaby | Doncaster | PED5 |
| Old Dilton | Wiltshire | SAL |
| Old Dock | Dudley | OWW |
| Old Drumchapel | Glasgow City | NEM5 |
| Old Farm Park | Milton Keynes | BBM |
| Old Fletton | City of Peterborough | ECM1 , EMP , FAS , FOM |
| Old Fold | Gateshead | LEN3 |
| Old Ford | Greater London - Tower Hamlets | BDM |
| Old Goole | East Riding of Yorkshire | GDL , GHM , TJG2 , WAG1 , WAG2 , WAG3 |
| Old Harlow | Essex - Harlow | BGK |
| Old Hatfield | Hertfordshire - Welwyn Hatfield | ECM1 |
| Old Haywoods | Sheffield | SKL |
| Old Heath | Essex - Colchester | COC |
| Old Hill | Sandwell | GSJ2 |
| Old Hills | Bradford | TJC3 |
| Old Kilpatrick | West Dunbartonshire | NEM5 |
| Old Lakenham | Norfolk - Norwich | ETN , LTN1 |
| Old Lenton | City of Nottingham | LSN , MJT1 , TSN1 |
| Old Linslade | Central Bedfordshire | LEC1 |
| Old Malden | Greater London - Kingston upon Thames | MPC |
| Old Malton | North Yorkshire - Ryedale | YMS |
| Old Micklefield | Leeds | CFM , HUL3 , HUL4 |
| Old Milton | Hampshire - New Forest | BML2 |
| Old Milverton | Warwickshire - Warwick | LSC2 |
| Old Monkland | North Lanarkshire | RCB |
| Old Newton | Suffolk - Mid Suffolk | LTN1 |
| Old Oak Common | Greater London - Ealing | ACW , ANL , AWL , BOK4 , BOK5 , CAW , HED , MLN1 , OOC1 , OOS , SZS , WAW , WLL9 |
| Old Philpstoun | West Lothian | EGM1 |
| Old Romney | Kent - Shepway | APL |
| Old Shoreham | West Sussex - Adur | BLI1 |
| Old Shorthill | Shropshire | SBA1 |
| Old Sodbury | South Gloucestershire | SWB |
| Old Stillington | Stockton-on-Tees | STF |
| Old Struan | Perth and Kinross | HGL2 |
| Old Swan | Liverpool | OME3 , SCT1 |
| Old Swinford | Dudley | OWW , SJS |
| Old Tebay | Cumbria - Eden | CGJ7 |
| Old Town | Barnsley | PED2 |
| Old Town | City of Edinburgh | ECN1 , ECN2 , EGM3 , EGM4 |
| Old Town | East Sussex - Rother | WJB |
| Old Town | Hartlepool | LEN3 |
| Old Town | Hertfordshire - Stevenage | ECM1 |
| Old Town | Poole | HAG |
| Old Trafford | Trafford | CDM1 , MAJ |
| Old Treowen | Caerphilly | WVL |
| Old Tupton | Derbyshire - North East Derbyshire | SPC8 |
| Old Whittington | Derbyshire - Chesterfield | CHR |
| Old Wives Lees | Kent - Ashford | FDM |
| Old Wolverton | Milton Keynes | LEC1 , WOW2 |
| Old Woods | Shropshire | WSJ2 |
| Oldbury | Kent - Tonbridge and Malling | SBJ |
| Oldbury | Sandwell | OLD , RBS2 |
| Oldeamere | Cambridgeshire - Fenland | EMP |
| Oldfield Park | Bath and North East Somerset | MLN1 |
| Oldhall | Renfrewshire | AYR1 |
| Oldmixon | North Somerset | MLN1 , WSM |
| Oldtown | Aberdeenshire | ANI1 |
| Olgrinmore | Highland | WCK |
| Ollerton | Nottinghamshire - Newark and Sherwood | HIM , TYC |
| Onibury | Shropshire | SHL |
| Onllwyn | Neath Port Talbot | NAB |
| Onneley | Staffordshire - Newcastle-under-Lyme | HCM2 |
| Onston | Cheshire West and Chester | CGJ1 |
| Openshaw | Manchester | AYS , HAJ |
| Orbiston | North Lanarkshire | EGS1 , WCM2 |
| Orbliston | Moray | ANI2 |
| Orchard Park | East Renfrewshire | EKE |
| Ordsall | Nottinghamshire - Bassetlaw | MAC3 , WHR |
| Ordsall | Salford | CDM1 , COL , DSE , MAJ , MVE1 , OCD , OLL1 , OLW |
| Ore | East Sussex - Hastings | ATH |
| Orgreave | Sheffield | MAC3 |
| Orlestone | Kent - Ashford | ATH |
| Orleton | County of Herefordshire | SHL |
| Ormlie | Highland | TSO |
| Ormsgill | Cumbria - Barrow-in-Furness | CBC1 |
| Ormskirk | Lancashire - West Lancashire | FCO , SJO2 |
| Orrell | Sefton | NMB |
| Orrell Park | Liverpool | SJO2 , WJK |
| Orston | Nottinghamshire - Rushcliffe | NOG1 |
| Orton | Moray | ANI2 |
| Orton Longueville | City of Peterborough | FOM |
| Osberton | Nottinghamshire - Bassetlaw | MAC3 , MAN1 , MAN2 |
| Osgodby | North Yorkshire - Selby | HUL1 |
| Osmaston | City of Derby | DBP1 , MJS1 |
| Osmondthorpe | Leeds | HUL4 , NHM , NHM2 , NHM3 , NHM4 |
| Ospringe | Kent - Swale | VIR |
| Ostend | Essex - Maldon | WIS |
| Osterley | Greater London - Hounslow | BRB |
| Oswestry | Shropshire | GNQ1 , GNQ4 |
| Otford | Kent - Sevenoaks | OJS , SBJ |
| Otterbourne | Hampshire - Winchester | BML1 |
| Otterburn | North Yorkshire - Craven | SKW1 |
| Otterspool | Liverpool | HXS1 |
| Oughterside | Cumbria - Allerdale | CBC3 |
| Oughtibridge | Sheffield | MAC3 |
| Oulton | Leeds | TJC3 |
| Oulton Broad | Suffolk - Waveney | ESK , NOL |
| Ouse Acres | York | ECM5 , HAY1 , HOS |
| Ouston | County Durham | ECM5 |
| Outhgill | Cumbria - Eden | SAC |
| Outwood | Somerset - Sedgemoor | CCL , MLN1 |
| Outwood | Wakefield | DOL2 |
| Outwoods | Staffordshire - Stafford | WND |
| Over | Gloucestershire - Tewkesbury | SWM2 |
| Over | South Gloucestershire | BSW |
| Over Compton | Dorset - West Dorset | WEY |
| Over Kellet | Lancashire - Lancaster | SJC |
| Over Leigh | Derbyshire - High Peak | BEJ |
| Over Whitacre | Warwickshire - North Warwickshire | NWO |
| Overpool | Cheshire West and Chester | HHJ |
| Overthorpe | Northamptonshire - South Northamptonshire | DCL |
| Overton | North Yorkshire - Hambleton | ECM5 |
| Overtown | North Lanarkshire | WCM2 |
| Oving | West Sussex - Chichester | TBH2 |
| Owl End | Cambridgeshire - Huntingdonshire | ECM1 |
| Owler Bar | Derbyshire - North East Derbyshire | MAS |
| Owlerton | Sheffield | MAC3 |
| Owlet | Bradford | SBF |
| Oxbridge | Stockton-on-Tees | BOH , DSN2 , LEN3 |
| Oxenholme | Cumbria - South Lakeland | CGJ7 , OXW |
| Oxford Spires Park | Oxfordshire - Cherwell | DCL |
| Oxhey | Hertfordshire - Watford | CWJ , LEC1 |
| Oxlease | Hertfordshire - Welwyn Hatfield | ECM1 |
| Oxshott | Surrey - Elmbridge | NGL |
| Oxspring | Barnsley | PED2 |
| Oxted | Surrey - Tandridge | SCU1 |
| Oxton | Nottinghamshire - Newark and Sherwood | BPC |
| Oyne | Aberdeenshire | ANI1 |
| Ozendyke | North Yorkshire - Selby | ECM3 |