Goto the link and add the game to your basket and it should automatically change the price to £38.39. Then all you have to do is convert 100 ubisoft points you get from playing ubisoft games to get a 20% off code bringing the game down to 30.71. You can even get those points playing the three hour demo of the game. To get the code goto https://club.ubisoft.com/#!/en-GB/shop-rewards
and on left click shop discount. This is a PHYSICAL copy too.
A great deal as the season pass is £29.99 on its own.