Hi Harry, sorry for the delay. These are some pretty good options for your budget
On DinoPC.com, choose the H97 chipset motherboard option
https/www.dinopc.com/shop/pc/viewPrd.asp?idproduct=1716
Customizations:
CPU: NEW! Intel Core i5 4460 £99.00
Operating System: Windows 8.1 (64-bit) £73.89
Motherboard: NEW! Gigabyte H97M-HD3 £25.70
Memory: 8GB Corsair 1600mhz Vengeance (2x4GB) £39.00
Hard Drive: NEW! Crucial 256GB MX100 SSD £45.10
Secondary Hard Drive: 1TB S-ATAIII 6.0Gb/s £38.29
Optical Drive: 22x DVD±RW DL S-ATA Included
Graphics card: NEW! NVIDIA GeForce GTX 970 4GB £259.00
Sound card: Onboard 7.1 Audio Included
Case: Corsair Carbide 200R £34.50
PSU: 650W Corsair RM Fully Modular £79.30
Warranty: 3 Year SureCare Warranty Included
Additional Items:
Keyboards and Mice: Cooler Master Devastator Gaming Keyboard and Mouse £28.99
Product Subtotal: £912.70
The Corsair RM 650 isn't the greatest PSU but the 650W version is much better made than the RM's of higher wattage (which I would avoid)
Alternatively https
/www.cyberpowersystem.co.uk/system/Infinity_Achilles_SE/
Case: Corsair Carbide 230T Mid-Tower Gaming Case (Black/Red Colour)
Extra Case Fan Upgrade: Default Case Fan
CPU: INTEL® Core™ i5-4590 Quad Core 3.30 GHz 6MB Cache LGA1150 + HD Grapics
Cooling Fan: INTEL Standard CPU Cooler
Coolant for Cyberpower Advance WaterCooling Kits: NONE
Motherboard: Gigabyte Z97-HD3 INTEL Z97 Chipset, ATX Mainboard w/ 4 RAM slots, 7.1 HD Audio, HDMI, GbLAN, USB 3.0, SATA-III, 1x Gen2 PCIe x16, 1x Gen2 PCIe x4, 2x PCIe x 1 & 2x PCI
Memory: 8GB (2x4GB) DDR3/1866mhz Dual Channel Memory (HyperX Fury White w/Heat Spreader)
Video Card: MSI Afterburner OC NVIDIA GeForce GTX 970 4GB 16X PCIe 3.0 Video Card (Single Card)
Free Game Coupons: FREE Pick Your Path Coupon
Power Supply Upgrade: 750 Watts Power Supplies (Cooler Master 750 Watts V750 VSM Gaming Power Supply, 80+ Gold)
Hard Drive: 256 GB Crucial MX100 Series SATA III Gaming MLC Solid State Disk (Single Hard Drive)
Secondary Hard Drive: 1TB SATA-III 6.0Gb/s Cache 7200RPM Hard Drive (Single Hard Drive)
Optical Drive: 24X Double Layer Dual Format DVD±R/±RW + CD-R/RW DRIVE. (BLACK Colour)
Sound: HIGH DEFINITION ON-BOARD 7.1 AUDIO
Network: ONBOARD 10/100/1000 GIGABIT LAN PORT -- As standard on all PCs
Keyboard: (Keyboard & Mouse Combo) Cooler Master Devastator Gaming Keyboard & Mouse
Operating System: Microsoft® Windows 8.1 (64-bit Edition)
Warranty Service: DESKTOP STANDARD WARRANTY: 3 Year Labour, 2 Year Parts, 1 Month Collect and Return
Comes to £828
Scan.co.uk 3XS's Systems also have a good reputation but the PC configuration is rather "involved"
Sorry it took so long by the way!