Well, depending on your needs, you can probably scale back on some parts. If you are not interested in overclocking the CPU, you could save a bit of money by going with a non-overclocking model and dropping the 212 Evo heatsink, the CPU will come with a small basic heatsink that will work just fine. You would also be able to go with a much cheaper motherboard.
It seems that the Sony headset will natively work with Windows PCs, all you need to do is plug in the USB receiver. If you do not mind reusing the Playstation headset with your new PC, then you won't need a new headset or sound card at all.
The GTX 980 is around 10~20% more capable than the GTX 970, but most people would not consider the difference great enough to warrant the extra £150+ that the GTX 980 costs. I just saw that it was possible to fit the GTX 980 into your £1000 budget, so I put it in there just as an example.
Here's a more conservative build with a non-overclocking processor and GTX 970, based on what you've told us.
PCPartPicker part list /
Price breakdown by merchant
CPU: Intel Core i5-4590 3.3GHz Quad-Core Processor (£154.98 @ Novatech)
Motherboard: ASRock H81M-HDS Micro ATX LGA1150 Motherboard (£38.17 @ Scan.co.uk)
Memory: Kingston Savage 8GB (1 x 8GB) DDR3-1600 Memory (£43.71 @ Amazon UK)
Storage: Crucial BX100 250GB 2.5" Solid State Drive (£70.49 @ Amazon UK)
Storage: Toshiba 1TB 3.5" 7200RPM Internal Hard Drive (£37.97 @ CCL Computers)
Video Card: EVGA GeForce GTX 970 4GB SSC ACX 2.0 Video Card (£268.31 @ Ebuyer)
Case: NZXT Source 210 Elite (White) ATX Mid Tower Case (£33.85 @ Scan.co.uk)
Power Supply: EVGA 600B 600W 80+ Bronze Certified ATX Power Supply (£46.98 @ Scan.co.uk)
Total: £694.46
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-05-23 13:29 BST+0100
That's quite a good build for cost to performance.
The GTX 970 should be able to handle games at higher settings at 1080p and 60FPS quite well, but it varies by the game, of course. If you wanted to be definitely capable of 60FPS at even higher settings for future games, consider the GTX 980 or wait for the new graphics cards from Nvidia and AMD coming in June. The GTX 980 Ti is coming in less than 2 weeks and AMD is launching a new line of graphics cards in the middle of June.
One more thing to ask you, do you have access to a copy of Windows? If not, we'll also have to include that into the costs. You can get a
retail copy of Windows 8.1 for around £75, but if you want to save money and don't mind the risk, Windows 7/8.1 licenses can be bought from
reddit's
microsoftsoftwareswap for £15 or less. These are most likely
legitimate keys that are resold from educational programs like Technet
or Dreamspark. However, you are dealing with a person instead of a
retailer, and informal Windows keys sales are not approved by Microsoft
and probably breaking some licensing agreement to be clear, but it's not illegal. The risks involved are that the person could be selling you a fake or used key, or that Microsoft will not provide customer support as you did not buy it from them, and/or they may deactivate your license and refuse to reactivate it, although it's somewhat unlikely, usually only if the seller and their list of sold keys was caught. We've had people here using those keys without issues for a long time and others who say Microsoft deactivated their key after several months.