The website http://magic.defra.gov.uk allows you to point at a point on an OS map and it returns the grid reference.
The tool is on the top left hand side of the toolbar, it looks like a grid with a question mark in it.
The website http://magic.defra.gov.uk allows you to point at a point on an OS map and it returns the grid reference.
The tool is on the top left hand side of the toolbar, it looks like a grid with a question mark in it.