I would use a helper column to strip out the numbers, then sort on that.
For example, if ALL of your data involves exactly two (never more, never less) letters, followed by numbers, try
=mid(C1,3,10)
and copy down as far as required.
This assumes none of the codes will contain strings of digits longer than 10 characters - adapt as required.
Then select all your data, both column C and the helper column, but using the helper column as your sort key.