I was shopping in the Whiterose centre in Leeds today. I was acosted by a woman from Toys r us who thrust a flyer into my hand, on it in the bottom right corner is a voucher for 20% off any item in the Leeds store.
Thinking there was a catch I caught back up with her, she said it works on anything apart from gift cards and until monday!
I'm going tomorrow to buy a ps3!
Might be worth asking at the store in case they have more of them. if not look out for a girl with a purple tshirt in the white rose.