The unclued entries (three of two words, two of three words, one of one word) each complete a phrase starting with the same first word.

Across

11    Move left to right in washing plants (9)

12    Bird of prey? (5)

14    Mischief-maker’s restrained in hearing (4)

15    Worry Camilla on a regular basis (3)

18    Bone breaking seal’s coat of antimony (7)

19    Lady chess champion bitten by snakes (7)

22    Edrich perhaps pens a note for Strauss? (6)

23    It’ll project language dividing France and Spain (6)

24    Mosquito agrees to wipe out two hundred (5)

27    Gascoigne avoiding his first yellow (5)

29    Failing to digest a fizzy drink, say...