Credit card balance transfers...?

Is there any credit card that will allow you to transfer your whole balance (not just £500) onto their card as a new customer? i filled in a form for one of them, to be told that the most i could transfer is £500. my balance is £1000. i wanna get the 6 months interest free on balance transfers. thanks.
Answer
Here, check this site. its all about this sort of stuff.it was featured on radio 2 as well.http://www.stoozing.com/