Ok, I failed trying to save you cash (ended up changing a few things and ended up adding 65quid) but it'll give you an idea.
PCPartPicker part list /
Price breakdown by merchant
CPU: Intel Core i5-4590 3.3GHz Quad-Core Processor (£149.99 @ Amazon UK)
Motherboard: MSI H97M-G43 Micro ATX LGA1150 Motherboard (£66.99 @ Amazon UK)
Memory: Kingston HyperX Fury Black 8GB (2 x 4GB) DDR3-1600 Memory (£35.99 @ Amazon UK)
Storage: Samsung 850 EVO 120GB M.2-2280 Solid State Drive (£55.59 @ Amazon UK)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£34.74 @ Aria PC)
Video Card: HIS Radeon R9 390 8GB IceQ X² OC Video Card (£259.55 @ Overclockers.co.uk)
Case: Cooler Master N200 MicroATX Mid Tower Case (£38.02 @ Amazon UK)
Power Supply: EVGA SuperNOVA G2 650W 80+ Gold Certified Fully-Modular ATX Power Supply (£67.94 @ Amazon UK)
Case Fan: Corsair Air Series AF140 Quiet Edition 67.8 CFM 140mm Fan (£11.99 @ Ebuyer)
Total: £720.80
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-10-21 17:13 BST+0100
Anyway, the points worth noting:
1. The CPU you have is locked, so no need for a 'Z' chipset. 'H' will do fine for you. Look at H97 rather than H87 though, as there's support for M.2 SATA (not included in your build at the moment).
2. Changing to the board I selected reduces the RAM available, but lower MHz will save money (and will be negligable in day to day performance anyway).
3. As you have a locked CPU and can't OC, an aftermarket cooler isn't totally necessary. You could get by on the stock cooler. Can always add the Hyper 212 EVO later if you wanted?
4. You may wish to add an SSD (M.2 perhaps) for your OS - but that'll increase cost.
5. I changed your GPU to an R9 390 which gives you a substantial increase in memory (8GB vs the 4GB in your build). The GTX 970 is still a solid card though.
6. If you go for the R9 390, you'll need to change out that PSU.
Changing the board out, to give you the M.2 potential in future - and the RAM accordingly, really only saves you any money by dropping the cooler:
PCPartPicker part list /
Price breakdown by merchant
CPU: Intel Core i5-4590 3.3GHz Quad-Core Processor (£149.99 @ Amazon UK)
Motherboard: Gigabyte GA-H97M-D3H Micro ATX LGA1150 Motherboard (£67.91 @ CCL Computers)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory (£39.98 @ Novatech)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£34.74 @ Aria PC)
Video Card: Zotac GeForce GTX 970 4GB Video Card (£249.55 @ More Computers)
Case: Cooler Master N200 MicroATX Mid Tower Case (£38.02 @ Amazon UK)
Power Supply: EVGA 500W 80+ Certified ATX Power Supply (£29.99 @ Aria PC)
Case Fan: Corsair Air Series AF140 Quiet Edition 67.8 CFM 140mm Fan (£11.99 @ Ebuyer)
Total: £622.17
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-10-21 17:15 BST+0100
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