Moving Data (Addresses) From Rows To Columns

I have address data all in column A (each paret of the address is on a separate row) which I need to move to separate columns on one row for each address:

ie:

Mr Bloggs (row 1)
123 The Avenue (row2)
The town (row 3)
The postcode (row 4)

Mrs Smith (row 6)
456 The street (row7)
The postcode (row 8)

needs to be: (I have used || to indicate different columns)

Mr Bloggs || 123 The avenue || The town || The postcode
Mrs Smith || 456..... || .......

The problem you see from the above is that they are not always consistent ie. the postcode (zip) isn't always 3 rows below the name for example. Also although generally there is a blank row between each record (this may sometimes be 2) and equally there may also be times when there is a blank line in the address.

Any ideas on how to do this.... I have 1000's of records and really can't afford to go through each one making it consistent before moving it to columns?