Actually there is a nice solution to this problem. You can hide the Free UK Delivery option for customers eligible for Free Local Delivery based on specific postcodes using the ShipRight app. To do that, follow the below steps:
- Add Free UK Delivery in the Additional shipping methods field.
- Add the specific postcodes for Free Local Delivery in the Postal/zip codes field like the below screenshot.
Now, customers in the specified postcodes will not be able to select Free UK Delivery at the checkout, ensuring they only choose Free Local Delivery. Hope you find it useful.
