The third level of Postcode boundaries, and the most detailed, are Postcode Sectors. These are denoted by the first 3 or 4 characters of your postcode. eg. B1 1, B1 2 or OX1 1, OX1 2 etc. These Sector boundaries are depicted on our 20 postcode Sector maps.
In addition, we are able to create bespoke Postcode Sector maps centred on your own choice of location, please call us for a price.