To assist in filling out this field print this page and then visit magic.gov.uk
and follow these simple instructions:
Step 1 - What data do you wish to view?
Select Administrative Areas from the "Select topic" dropdown menu
Step 2 - Where do you want to go?
Select " place" or "postcode" and type the name of the village or town or postcode as appropriate (do not enter a road name)
Click "Open Map"
When the map has loaded change the scale to 1: 5000 or 1:2000
When the map has reloaded click the hand symbol and drag the map to the location you require
As you move the cursor across the map, the grid co-ordinates for the chosen point are shown in the bottom left of your browser.