One of the drawbacks of redundant words is that there are redundant words in normal clues. 9, for instance, has the E-word which is wholly unnecessary for the wordplay, and is there only for the surface. Similarly the P-word in 16, and there are probably others. I accept that writing smooth surfaces is important, but if the setter is using the redundant word gimmick in only a few clues, as here, I think it's a pity that there are redundant redundant words in what is otherwise a good solid puzzle. (And I learned a lot I didn't know about Royal Blood too.)