Free Shipping On Orders Under £50, But On Orders Under £30 Locally?

[steve_ringuk]

Hi

I am currently using Zones tables rate as my shipping module, and I have it setup to give customers free delivery on orders over £50.

Is it at all possible to have that still, but include a function that lets customers who are local have free delivery on orders over £30?

I have in the zones tables rate defined the local county, and within that I have reduced the postage as it is cheaper for me to post locally with a courier, so I offer cheaper postage for customers who select my local county, but is there a way so that when they select that they are from my local county, in a way that it then gives them cheaper postage, that it says they can have free postage on orders over £30 rather than over £50 like the rest of the country?

Any help would be muchly appreciated

Thanks

Steve

[steve_ringuk]

does anyone have any ideas on this at all?