Replace most of the modified parts with standard or even less chavvy parts and it will look a lot better.
Wheels
Grilles
Skirts
Rear Lights
Spoiler
Exhaust
Hey Thanks for all the comments guys . . . I especially liked the one about it looking like it crashed into halfords backwards! The car was a bargain and I am now on a rescue mission to get it looking less chav. I have standard rear lights, skirts, and front grilles on order, and that awful spoiler is coming off! It's a work in progress I'm afraid you'll have to be patient with me! I'll keep you posted with pics on her progress