The Postcode Anywhere integration enables premise level postcode look-ups. After signing up with their service (http://www.postcodeanywhere.co.uk ) go to the Menu option, Tools > Postcode Lookup > Postcode Anywhere

One your details have been filled in select the Reload Area option which is down in the bottom left of the screen. Now if you click into the Account there will be a new button next to the postcode field for Get Address, another drop down list will appear under the postcode field with all the addresses in that postcode. Click on the required address and the system will automatically fully populate all the address fields.