A 4670k would be wasted on a H87 board as you won't be able to overclock it so you need Z87. A better board is the
Gigabyte Z87X-D3H, if you click on today only it's less than £100. A new and very interesting board is the
Gigabyte G1.Sniper Z87. It has killer nic, excellent onboard audio, does SLI and Crossfire and has been getting very good reviews. Click on today only and it's £111.59. Definately worth the extra £12 i would say.
Just in case you haven't seen it, the 4670k is on Amazon for
£156.94 with free delivery.