Sorry, OSI mapping is not freely available online (It is partially available on the OSI website). "Open Topo", based on OpenStreetMap, is a good alternative.
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GPX Editor
Record map clicks
Reload map
Initialising...
Map Help
OpenStreetMap
Switch to: OpenStreetMap - global, free, volunteer created maps with the OpenTopo map tile server.
OS
Switch to: Ordnance Survey (OS) Explorer 1:25K, Landranger 1:50K, "road atlas" 1:200K.
Bing
[2025-04] Removed as Bing's API is being switched off. The replacement doesn't have OS Mapping
Google
[2025-04] Removed due to pricing changes. It would no longer be free for us.
Change map size: full screen, normal
Print. Select
(landscape) or
(portrait).
Hints: Use 'Print Preview'. You may need to reduce scaling ('shrink to fit'), and remove headers / footers / borders.
Move the map to your GPS location.
When zoomed in, click a place to get postcode
Tweets near the last clicked point on the map
(for routes) Show waypoints with distances.
coordinates
Click the map (not on a line or marker) to update the OS and GPS coordinates
OS
Ordnance Survey (OS) mapping covers England, Wales and Scotland - not Northern Ireland or the Channel Islands. Isle of Man is 1:50K only.
Legend : OS 1:25Kpdf,
OS 1:50Kpdf.
There are paper 1:25K maps for both Isle of Man and the Channel Islands
OSI, OSNI
OSNI and OSI produce paper 1:50K and some 1:25K maps. Only OSNI is online : OSNI | Basemap Gallery (4 squares icon) | 25K or 50K.
OpenStreetMap
OpenStreetMap is an opensource global crowd sourced map. It is better at showing footpaths than the OS in some places.
Screen Capture
(On Windows) To copy a map to the clipboard : use CRTLPRINT-SCREEN (thats press and hold the CTRL key, then press PRINT SCREEN). You can then paste it into MS Word.
(On Android) Varies by device. Try press and hold Power then Volume -, or try press and hold Power