Concatenate address lines of varying number

I am trying to concatenate lines of addresses.

There are two problems:
1. The first line could start in a different row each time
2. The number of lines varies

I have sorted the first issue by matching the line that says 'Address', then offsetting by one row.

I have a formula to determine the number of lines by subtracting the last row of address from the first row (the cell after the last line contains the text "Customer contact details").

In this instance, I could use nested if statements for every permutation, but is there a better way?

Thanks in advance.