What is the best desktop pc i can get for under £500?

There actually is a great desktop on dell.com that I really like called the Inspiron 560 Desktop.

Everything you want and nothing you don’t. The Inspiron™ 560 desktop gives you the power to personalize everything down to the chassis color.

Complement your style with a choice of 5 vibrant colors

Choose your power with up to an Intel® Core 2 Quad processor

Store more with the optional 1TB hard drive and up to 8GB memory2

I like this desktop because you're getting a lot for your money, and the hard drive is more than enough data for playing games, has a significant amount of RAM built in for playing games, and can do pretty much anything, such as playing DVDs, CDs, PC CD games, and PC DVD games. I also like this computer because it has safe online features, and you even get to choose you're own color. It's a much better deal than other dell desktops. If you want the ordinary, original high quality desktop computer that has all the basic functions to suit your needs, this computer is definitely for you. Check it out here!

http://www.dell.com/us/p/inspiron-560/pd

Hope I helped!

Maxwell

For $500 you could build just the tower with an Athlon II processor, 400w power supply with the case combo, less than 500gb Hard drive and a 6750 graphics card. You'd have to build it yourself. No PC manufacturer is going to sell a system that plays games for $500. You wouldn't get much graphics power. probably enough to play most games in DX 10 mode at medium settings.

I suggest you check at wal-mart, Office Depot, and Best Buy.