If the Data Download button is not available, the most
likely cause is that you are at an institution that does not allow Data
Download off campus.
How do I define my area?
Step 1: find your area
You can search for your area of interest by:
using the search box to search for
a placename, postcode or geographic coordinates
panning and zooming the map.
there are reference grids (postcodes
or national grid squares) you can switch on to help you identify your
area. Select any grid using the Reference Grids menu on the left of
Note: the maps you view in Data Download
are only to help you identify your area. They do not reflect the data
product(s) you will order.
Step 2: Define an area on the map
You must define your area on the map. There are several tools available,
shown in this image:
the Draw rectangle button,
click on the map,
drag to highlight your area, release when you have finished drawing.
the Draw polygon button,
click on the map, clicking at each point you wish to draw. Double
click when you have finished drawing.
the Buffer button, you can create point or line buffers to
select everything with a set distance of a point or line.
Select Visible area - this will select everything in the map window.
Use coordinates - use bounding coordinates, either Easting/Northing
or Latitude/Longitude, to define your area.
Use tile name - input an Ordnance Survey National Grid tile name
to define an area.
Delete your area
The delete button can be used to clear
the selected area and start again.
What data products can I get?
The Ordnance Survey data products we offer are grouped into a number
of themes: OS MasterMap, Backdrop mapping, Land and Height data, Vector
data, Boundary and Location data, and Archived Datasets.
Select the down arrow next to any category to see the available data
Each category has:
a list of the available data products
a checkbox next to each product to order it
an arrow on the right to view more information about any product
a grid icon - select this to show the areas on the map covered
by that data product
Need more information?
Click the arrow to the right of any product name.
The Product Information pop-up, see image below, contains information
about the scale, formats, allowance, grid size, licence and uses.
Click More Info. on the box for a detailed help page.
Each pop-up has a link to the licence agreement for the product you
are interested in. The products available through Data Download have either
the Digimap OS Licence or the Ordnance Survey OpenData Licence.
This section contains the vector version of OS MasterMap.
There are 9 products available.
Topography is the data product that contains all available data
layers. It's available in 3 formats; DWG (for AutoCAD), filegeodatabase