[£800] Decent Gaming PC that can handle itself

What will you be doing with this PC? Be as specific as possible, and include specific games or programs you will be using.

• This will be my first build but I'll be helped by a friend who has built a lot of PC's in the past. I plan to be using this computer mainly for gaming. For example, the big games I expect to be running (at a decent quality, not looking for top of the range) are GTA5 which I know can be pretty intense as well as some other decent games.

What is your maximum budget before rebates/shipping/taxes?

• I really want to try and stay as close to 700 as possible, but I will stretch to 800 if you really think I'd be missing out massive on something.

When do you plan on building/buying the PC? Note: beyond a week or two from today means any build you receive will be out of date when you want to buy.

• I will be buying the build almost immediately.

What, exactly, do you need included in the budget? (Tower/OS/monitor/keyboard/mouse/etc)

• Mouse: http://www.amazon.co.uk/dp/B00NHJPUDS/?tag=pcp0f-21 (unless you can find something better, cheaper)
• Monitor: http://www.amazon.co.uk/dp/B00P8GOZ9S/?tag=pcp0f-21 (again, if cheaper and better i'm happy, it must have 2x hdmi slots though)
• Obviously all the rest that are obvious, I'm happy to use a simple tower as this is my first build.

Which country (and state/province) will you be purchasing the parts in? If you're in US, do you have access to a Microcenter location?

• United Kingdom (no to Microcentre I'm afraid)

If reusing any parts (including monitor(s)/keyboard/mouse/etc), what parts will you be reusing? Brands and models are appreciated.

• I'll be reusing a sound system - can't really remember which brand. And a keyboard will be reused.

Will you be overclocking? If yes, are you interested in overclocking right away, or down the line? CPU and/or GPU?

• No.

Are there any specific features or items you want/need in the build? (ex: SSD, large amount of storage or a RAID setup, CUDA or OpenCL support, etc)

• An SSD with decent memory, my pcpartspicker uses a 120gb one.
• 1TB of Hard Drive space
• Question 3 also answers some of these.

Do you have any specific case preferences (Size like ITX/microATX/mid-tower/full-tower, styles, colors, window or not, LED lighting, etc), or a particular color theme preference for the components?

• Nope!

Do you need a copy of Windows included in the budget? If you do need one included, do you have a preference?

• Don't need one.

Extra info or particulars:

• Thank you in advance - I appreacite all your help and if you have any questions please feel free to chat to me!