Ordnance Survey Official Site A digital business, our highly accurate maps help governments and companies to be effective, both in Britain and overseas We also make Britain s most detailed, up to date and accurate leisure maps for walking and cycling. Ordnance Survey Ordnance Survey map definition and meaning Collins Word forms plural Ordnance Survey maps countable noun An Ordnance Survey map is a detailed map produced by the British or Irish government map making organization. Ordnance Survey OrdnanceSurvey Twitter Ordnance Survey YouTube We are Ordnance Survey , views years ago As Britain s mapping agency, we provide information that s vital to the nation s wellbeing. Home Ordnance Survey Ireland Ordnance Survey Ireland is the Irish State s National Mapping Agency, essential to the infrastructural development of the country. Ordnance Survey Ireland Ordnance Survey Ireland OSI Irish Suirbhireacht Ordanis ireann is the national mapping agency of Ireland.It was established in as a body corporate It is the successor to the former Ordnance Survey of Ireland It and the Ordnance Survey of Northern Ireland OSNI are the ultimate successors to the Irish operations of the British Ordnance Survey. Ordnance Survey maps OS Explorer, Landranger, The Ordnance Survey Maps offer a wide selection of scales and areas covered From the detailed Explorer Maps at , to the Landranger Maps covering a wider area at , These maps are ideally used for activities such as Walking, Cycling, Horse Riding and days out in the car.