The maps are reproduced by permission of Ordnance
Survey on behalf of HMSO.
© Crown Copyright and Database Right 2008. All rights reserved.
Now if you move the mouse pointer over the map, the box will show you the 'six-figure' grid reference of the smaller square the pointer is in.
The extra figures divide the blue squares into 10 parts in each direction, so that we now have the grid reference for a smaller square of 100 m by 100m.
Notice that the six figures are used so that the first three give the 'easting' and the last three give the 'northing'.
It is possible to get further accuracy by going to 'eight-figures' which denote a 10m by 10 m square, but this is not easy on this scale of mapping. For urban areas you can zoom in further, and select individual houses, but for rural areas you really need the field boundaries shown on a 1:25 000 map (the OS Explorer series) and use a 'romer' to help you, but unfortunately the OS have not released those maps for use on the web. Use the link below to find an eight-figure reference.
If you want to find the grid reference for another part of Worcestershire, or another part of the country, press the - button to zoom out, then slide the map by holding down the mouse button (or using the arrows on the map) so that the area that you want is central, then use the + button to zoom back in, centralizing as you go. The lettering system for the 100 km squares will work on the UK mainland.