When I print drawings or documents in layout they are now no longer centred on the page. I have not adjusted anything on the template or printer set-up and everything, using any other program, prints perfectly.
A4 appears to have shifted down and to the right (portrait) and A3 down (landscape).
Is there a re-set that will correct this?
I guess you are using SU2020 (unlike the 2016 in your profile ).
Most probably this could be the same problem as here:
I think SU team is working on it.
EDIT: I see you find it while I typed … 
In case you didn’t see the work around, for now if you export as PDF, or print to PDF, you can then print the pages correctly in any program that can open a PDF.