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Index Sheets for Ordnance Survey Map Series

These diagrams have been prepared by Chris Higley, based on the work of the late Brian Adams, David Archer, Roger Hellyer, the late Tim Nicholson, Richard Oliver and others. They are designed to be printed on A4 paper and may be copied freely for use in map libraries, or for private study or research.
Sheet line diagrams for other series, and more information about the various styles of sheet published, will be found in Roger Hellyer, Ordnance Survey small-scale maps, indexes: 1801-1998, Kerry: David Archer, 1999, ISBN 0 9517579 54.


Ordnance Survey County Origins

  • Great Britain
  • Ireland


  • 1:25,000 (Two and half inches to the mile)

    First series

  • South
  • North


  • 1:63,360 (One inch to the mile) and 1:50,000

    England & Wales

  • Old Series
  • New Series, Revised New Series, Third Edition, Fourth Edition
  • Revised New Series in colour
  • Third Edition in colour, Small Sheet Series
  • Third Edition, Large Sheet Series
  • Third Edition, District and Tourist Maps
  • Popular Edition
  • Fifth Edition
  • GSGS3907, War Revision
  • Second War Revision
  • Scotland

  • First, Second, Third, Fourth Editions
  • Third Edition in colour
  • Popular Edition
  • Great Britain

  • New Popular Edition
  • Seventh Series
  • 1:50,000 and Landranger
  • Ireland

  • First Edition
  • Second, Third Editions
  • Sheets issued in colour



  • 1:126,720 (Half inch to the mile)

  • England & Wales Small Sheet Series
  • England & Wales Large Sheet Series
  • Scotland
  • Ireland
  • Great Britain Second Series


  • 1:253,440 (Quarter inch to the mile) and 1:250,000

    England and Wales

  • General Map
  • First Edition and Second Edition (small sheet series)
  • Second Edition (Large Sheet Series)
  • Third Edition
  • Third Edition New or 'A' Series
  • Scotland
  • General Map
  • Scotland
  • Scotland Third Edition
  • Great Britian
  • Fourth Edition
  • 1:250,000 maps
  • Ireland
  • General Map
  • Ireland



  • 1:633,600 (Ten miles to the inch)
  • Great Britain


  • OTHER USEFUL RESOURCES:

    Download KML file for use with Google Earth to create sheet boundary diagrams for OS small scale mapping

    Use SHEETFINDER to identfy the Ordnance Survey sheets covering any specified locality