Yes, I'd looked at that forum thread before I contacted you - but it started in 2006 so not v helpful for IE 11 (although ppl are still posting on it!). I'd like to post my fix on there but it doesn't let 'guests' post.
Yes, always use the Word button when cutting and pasting (when the toolbar is there!).
The problem was with my home PC - not the office - as is the case with other colleagues. Perhaps the compatibility view was enabled for newman.ac.uk when the IE update was done which is why it wasn't a problem on campus...
Very pleased to have solved it though! Have told those colleagues who said they had the same issue.
Thanks for your help.