Hello List I have been given an address of a possible relation-by-marriage in North Yorkshire and it doesn't have a Zip code. Is it compulsory to add the Zip code to an English address? If I omit it, will my letter still be delivered or will it be returned to me? Is there any way in which I could find what the Zip code is? I would like to make sure before I write. Suggestions welcome. Regards Ailsa Petrie -- Hamilton New Zealand