Professional marks

Firstly, I would do the appendix with the calculations before writing the report (but obviously leaving enough time to write the main bits of the report to get the professional marks, even if I had not finished the workings). If you do start writing the report first, then leave 2 or 3 pages before the appendix. You will not lose marks for having blank pages if you do not need all of the space. If the worst happens and you do run out of pages before you have finished the report, then continue a few pages later. It is no problem as long as you make it clear at the top of each page which part of which question you are attempting.

You are welcome :-)