HI probably been asked for before but im a bit short on time to look through the forums so I'm hoping someone has a dead quick answer :)

Is there any free or quick way of loading all the UK postcodes and adding them to zen ?

The reason I ask is that a flat rate shipping rate is ideal for most stuff but for the big stuff on the site a flate rate doesnt cover it ...

Soemthign 6ft wide costs a fortune to send so I need either

1. Postcode shipping or flate rate on product type / category

Any ideas ????

Thanks G