1 Across, Kitchen surface perhaps, useful to prophet taking heroin (7)
11 Across, Creature such as bird in part (2,1,6)
12 Across, Queen's snotty 'wit' disrupted parlour game (6,9)
21 Across, Thunder cracking with energy - if caught, you'll get ill (5,3,7)
Compiler - DAEDALUS
Many Thanks