So!
How the hell do I format the address label?
I like official answers from official sources, so I went to royalmail.com (UK mail service) which brought me to http://www.postoffice.co.uk and the exact information I needed.
Here's the direct link and here's what it said:
When sending mail to someone in the UK, you should write the address as follows:
- Line 1: name of the person you’re sending the item to
- Line 2: house number and street name
- Line 3: locality name, if required
- Line 4: post town, printed in capitals
- Line 5: full postcode, printed in capitals on a separate line
Addressing formats vary by country, but ideally you should include:
- Line 1: name of the person you’re sending the item to
- Line 2: building number and street name
- Line 3: name of the city or town
- Line 4: name of the province, state or department and postal code
- Line 5: name of the country, in capitals
When addressing international mail:
- write the country name last and in capitals
- write your address on the back of the envelope so it’s easy to return your item if there’s a problem delivering it
- start each line on the left (do not centre the lines)