lettings_log_id,address_line1,address_line2,town_or_city,postcode_full
{id},address 1,address 2,town,B1 1BB
{id2},address 3,address 4,city,B1 1BB
{id3},,,,C1 1CC
,address 5,address 6,city,D1 1DD
fake_id,address 7,address 8,city,D1 1DD