I don't... why would...
Get x1 690 £400 - 500? , i73930k (£280 - 300), Asus mobo (any) (£200), 16gb ddr3 2011mhz ram (£200 - 300), 1000w psu (£180), Nzxt case (£100), HDD/SSD (£70-£200 / £100 - 300), optical drive (£20 - 40?)
You're looking at £1450+. Futureproof for about... 3 years, pushing it (personal opinion).