solved by adding more info
I have managed to resolve this issue by adding more fields for street and town, cannot understand why it will not work on postcode alone as thats how it works on the google maps site.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.