Five months after its grand reveal, Microsoft's Surface Book with Performance Base is finally coming to the UK. Why it's taken so long to cross the pond isn't clear, but never mind -- it'll do until the Surface Book 2 comes along. If you need a reminder, this is the most powerful Surface to date, packing an Intel Core i7 processor and a detachable, 13.5-inch touchscreen. The updated components are in the base, however (hence the name). Prise it open and you'll find an Nvidia GeForce GTX 965M with 2GB of GDDR5 memory, and enough battery to last you 16 (yes, 16) hours.