Yes, Microsoft Office for both Macintosh and PC can be installed on to your computer free of charge, unless you are a student or a visitor.
Go here for Windows PCs:
And here for Macs:
(You'll need to log in with your Biochemistry username & password)
You'll also need to "buy" a license (Mac, Windows) at a cost of £0.00, and for this you'll need to provide the number on the Department's OUCS Software Card. This number is available to members of the Department here.
Students should use this link for a discounted version of Office: