Some cats simply dont like wet, but you might want to experiement with different brands - when I got Pebbles, she wouldnt' touch any wet food, I eventually got her onto it, but she would only eat expensive brands. I wouldn't recommend mixing the two though, as it stops some of the benefits of dry, such as being able to leave it down all the time. And I agree with Michelle, to make sure it is a good quality dry, I dont know what Sainsburys are like as we dont have one.