Again, while searching this morning, I also found this deal for those of you with a PS3. It is the full bundle with Guitar. Newitts are offer next day delivery via DHL on this one, so you'll get it a bit quicker. If you live near York, there is a pickup option, so a potential £41.99!!
Here's the link - http://www.newitts.com/product/IT029294/Guitar_Hero_Aerosmith_Bundle_PS3.htm
Not sure if there are vouchers around at the moment, so feel free to add.