DavidF,
Yes both PDF's were produced using Office 2013 today (one on the Win 7 machine and one on the Win 8 machine). I have only opened the files with office 2013 (on both machines), presumable there has been an automatic format change when opening the files(?).
As far as I'm aware the only difference is the version of Windows, both have all available updates installed.
Yes. The spacing problem is from the moment I open the files. The error does not arise when printing or converting to a PDF or XPS file.
I can't see the 8 on the second line changing between the different PDF, however I do get the same effects you mentioned with some of the other letters. Though it may be a difference in the character spacing. When comparing the word 'divided' in the first
question, the 'd' certainly seem to jump up and to the right on the win 8 version. Agreed - The spacing between the coins and line a. varies greatly.
I definitely changed the line spacing, not the font size. On both versions of Windows:
I highlighted all the text in the main text box (using Ctrl+A),
Opened the 'line spacing options' using the link on the ribbon (Home -> Paragraph -> Line Spacing -> Line Spacing Options),
I then changed the 'Between lines:' (under 'Indents and Spacing' -> Line Spacing) from '1sp' to '16pt'.
Clicked OK.
I printed them, and overlayed the printouts. They were as good as identical. Albeit the bottom line of each page was 1 or 2 mm out vertically.
I have also been asked whether the fonts have been installed on both machines. The main text is Arial. The only other text on the pages is 'Bradley Hand ITC' which is 'The Classroom' on the top left corner.
Thank you for all of your help!