Update: Microsoft has now clarified the offer is available in U.S., UK, Germany, France, Denmark, Finland, Norway and Sweden.
Microsoft is currently running a neat little promotion that will see Lumia 950 and Lumia 950 XL owners receive a year's worth to Office 365 for free. All you need to do is download and install the Lumia Offers app and enter your email address to get the ball rolling. The promotion is open to said owners in the UK and U.S., and is not strictly limited to those who purchase eligible handsets through Unlocked Mobiles.
As noted in our coverage of the deal through Unlocked Mobiles, the full year's subscription is for the Personal plan, which will bag you a single install for a Mac or PC, as well as one tablet and a smartphone, and 1TB of OneDrive cloud storage for all your media needs. If you'd like to read up on the Lumia 950 and Lumia 950 XL, be sure to check out our comprehensive Lumia 950 review.
Do note that this promotion needs to be redeemed before July 30, though Unlocked Mobiles did state that phones need to be purchased before June 30.
The offer is also not compatible if you already have an Office 365 Home subscription.
Thanks, Johan van M., for the tip!