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In my mind it makes sense for a UK address form to contain 3 address lines. There are instances of people living in blocks or buildings where 2 lines may not always be enough.

I just wondered if anyone had any thoughts and/or guidance on this, should a UK address form have 2 or 3 address lines fields?

Best practice and thoughts are all welcome.

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Also have a look here:… – Bart Gijssens Feb 26 '14 at 10:56
@BartGijssens: Good article. And written by LukeW too, so if anyone knows about web forms it's him. – JonW Feb 26 '14 at 16:17
up vote 5 down vote accepted

For the address itself, there should be 4 lines as explained on the clear addressing guidelines on the official Royal Mail website (I say for the address itself because there is 4 + 1 line for the addressee's name).
EDIT : Some people have pointed out to me that you sometimes need to indicate the house name before the street name, so 5 lines instead of 4 finally !

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Except that if you have a house name this is often put on its own line before the street name, which makes five lines (that example is not included in RM guidance). And many people still like to include the county. – Andrew Leach Feb 26 '14 at 15:51
Is putting the house name necessary or not ? – Trevör Anne Denise Feb 26 '14 at 15:53
@TrevörAnneDenise Yes, putting the building name is necessary; if you live in a flat for example. – vincebowdren Feb 26 '14 at 15:54
Putting the house name is certainly necessary if the street is not numbered. This is often the case in more rural areas. – Andrew Leach Feb 26 '14 at 15:57
Ok, I'll edit my post in consequence then... I am asking myself one question : What do you guys think about replacing the several text fields by one text area (with a placeholder to give the example to the user) just as It would be when you write a real letter ? – Trevör Anne Denise Feb 26 '14 at 15:59

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