Grid Marks
gridmarks.co.uk
Free (verified)
Free UK survey map in the browser: plot site marks from an OS grid reference, easting/northing, lat/long, postcode or an Excel/CSV import, then plan the day's visits, export to Excel and save council areas for offline use.
- Best for
- UK surveyors marking, planning and revisiting site locations.
- Cost
- 'Free · no login' stated on site (checked 15 Oct 2026). Site says a future Pro plan may focus on team workflows and 'nothing is locked today'.
- Category
- Mapping and GIS
- Source
- gridmarks.co.uk (home page and page description) · checked 15 Oct 2026
Made by the same person who runs Surveyor Stack (Mark Slater). Listed on the same terms as every other tool: no seeded votes and no boost in the order.
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