Do i need any other components for gaming?

PCPartPicker part list / Price breakdown by merchant

CPU: Intel Core i5-4690K 3.5GHz Quad-Core Processor (£161.94 @ Aria PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£23.82 @ CCL Computers)
Motherboard: ASRock Z97 PRO4 ATX LGA1150 Motherboard (£82.80 @ Scan.co.uk)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory (£61.91 @ Ebuyer)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£39.97 @ CCL Computers)
Video Card: Zotac GeForce GTX 970 4GB Video Card (£244.99 @ Ebuyer)
Case: NZXT Source 210 (White) ATX Mid Tower Case (£31.45 @ Scan.co.uk)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply (£44.83 @ Amazon UK)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer (£13.15 @ Amazon UK)
Total: £704.86
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-11-15 13:42 GMT+0000

custom made, your PC, cheaper and significantly more superior and capable at gaming.