Ubisoft + is £12.99 for one month. You can download the game and cancel the trial then have 30 days to complete/finish the game.
Or you can buy it from a CD Key site for around £35 I guess.
The trial way looks interesting thanks, but do you loose the £12.99 if you cancel?
I've seen it for £49.99 , looks quite pricey at that price as I just got Call of Duty recently. I think more searching and waiting might be needed as I've also seen the collectors edition for £169 that comes with Tostador but it does not work