the build looks genuinely alright....but it so happens that i also put together a pc that is very similar to yours for £1400 not too long ago...theres the specs, if u want u can have a look at these, might help u out
I did ALOT of research so i think the builds really valid, also you might wanna throw in a tiny bit more money and probably get an Asus Z87-Plus for a mobo
CPU Intel Core i5-4670K 3.4GHz Quad-Core £155.99
CPU Cooler Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing £25.45
Motherboard Asus Z87-Plus ATX LGA1150 £112.90
Memory Kingston Fury White Series 8GB (2 x 4GB) DDR3-1600 £54.96
Storage Samsung 840 EVO 120GB 2.5" SSD £59.94
Western Digital AV-GP 2TB 3.5" 7200RPM £64.96
Video Card Asus Radeon R9 290 4GB DirectCU II £319.55
Case Cooler Master Storm Stryker (White) ATX Full Tower £129.00
Power Supply Corsair 650W ATX12V / EPS12V £83.93
Optical Drive Asus DRW-24F1ST DVD/CD Writer £15.95
Operating System Microsoft Windows 8 (OEM) (64-bit) £73.74
Monitor Asus VG23AH 23.0" £153.80
Wireless Network Adapter Asus PCE-N15 802.11b/g/n PCI-Express x1 £14.99
Mouse Mad Catz R.A.T. 5 Wired Laser £44.98
Custom Steelseries Apex Gaming Keyboard £37.99
Norton 360 Gold £31.49
Turtle Beach X12 Gaming Headset £25.00
LED strip lights £8.39
hope this helps!