| class="fn org" | Orgreave | class="adr" | Staffordshire | class="note" | | class="note" | |- class="vcard" | class="fn org" | Oridge Street | class="adr" | Gloucestershire | class="note" | | class="note" | |- class="vcard" | class="fn org" | Orkney Islands | class="adr" | | class="note" | | class="note" | |- class="vcard" | class="fn org" | Orlandon | class="adr" | Sir Benfro (Pembrokeshire) | class="note" | | class="note" | |- class="vcard" | class="fn org" | Orleton | class="adr" | Herefordshire | class="note" | | class="note" | |- class="vcard" | class="fn org" | Orleton | class="adr" | Worcestershire | class="note" | | class="note" | |- class="vcard" | class="fn org" | Orleton Common | class="adr" | Herefordshire | class="note" | | class="note" | |- class="vcard" | class="fn org" | Orlingbury | class="adr" | Northamptonshire | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormacleit | class="adr" | Western Isles | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormal | class="adr" | Shetland Islands | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormathwaite | class="adr" | Cumbria | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormesby | class="adr" | Redcar and Cleveland | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormesby St Margaret | class="adr" | Norfolk | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormesby St Michael | class="adr" | Norfolk | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormiscaig | class="adr" | Highland | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormiston | class="adr" | East Lothian | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormiston | class="adr" | Scottish Borders | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormsaigbeg | class="adr" | Highland | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormsaigmore | class="adr" | Highland | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormsary | class="adr" | Argyll and Bute | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormsgill | class="adr" | Cumbria | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ormskirk | class="adr" | Lancashire | class="note" | | class="note" | |- class="vcard" | class="fn org" | Ornish Island | class="adr" | Western