Display error for records concatenated in query statement

Hello,

I've set-up a query that is meant to display a set of address fields as one record from my contact info table.

The contact info table includes the following field: address1, address2, city and postcode.

The majority of records have information for address1, city and postcode, and a few have the same information plus the address2 field.

I've written the following expression to display the address:

Address: [contact info.address1]+", "+[contact info.address2]+", "+[contact info.city]+" "+[contact info.postcode]

When I run the query the only records that appear are the ones who's address1, address2, city and postcode fields contain information, the other records appear blank.

How can I change the expression so that all Address records are displayed?