10a - I was initially puzzled as to in what circumstances do the answer 'after cycling' mean "streak", but after checking Chambers thesaurus, I see that it is listed.
23a - I think I might still be missing an element of the wordplay here. I've assumed it's a DD but, if so, then "success" seems sufficient as one of them ("had the desired effect" being the other), which leaves me wondering what part "in following" plays?