This has nothing to do with macros. It's an autotext entry - there's no programming involved. Copy the text

{<PR_GIVEN_NAME> <PR_SURNAME>
}{<PR_COMPANY_NAME>


}{<PR_POSTAL_ADDRESS>}

to a blank document. Select it then press ALT+F3 give it the name AddressLayout (no spaces) and save it in the normal template. The insert address function will then use this format.
The only VBA programming is in the add-in which I suggested you might find useful and that is already done for you.

__________________
Graham Mayor - MS MVP (Word) (2002-2019)
Visit my web site for more programming tips and ready made processes www.gmayor.com

Thanks for all your advice it is much appreciated you taking the time and trouble to help me.

But as I said this only started as a little project to fill in some spare time but it has quickly developed into a major project and has started to do my head in.
I have found a way that suits what I need to do I have made a word document with the envelope size and style I wish to use and saved it as a document.

Then to print an address I start outlook 2010, select the record or record’s I wish to print, then go to mail merge, then select only selected records, then I need to select existing document with the envelope style I saved before, and then under merge option select envelope option and then print, this then prints the address just as I wanted, Job done.

There is one point I am not able to understand if I follow the above procedure it all works just fine I get the address printed as
Name
Address
Town
County
Post Code

But if first start Word 2010 then go to mailings, then select the create the single envelope option and pick an address from Outlook address book, the address is printed as below

Name
Address
Town, Post Code
County

As you can see the post code has jumped up 2 lines

I am not able to understand if I start a mail merge from word then import an address from outlook address book the post code is then on the same line as the town and not after the County line. But if I start outlook first then mail merge from outlook into word the address is printed ok ?