Solutions start with the letter preceding the clue, and should be fitted into the grid jigsaw-wise, wherever they will go.
A: Top mark - it follows copy (poking fun) (4) B: Set out bits - you’d make an all-in-one (8) C: Restrained, inserting dodgy tip - beware! (7) D: Half-persuade the maker of the sphere (8) E: Need Prince’s office when the leader’s gone (6) F: Légume verte: peut-être ‘être un’? (6,4) G: Striking hangings put through the machine (8) H: Host is furious, feeding fib to Queen (8) I: Fiery gin Sue mixed - put nothing in (7) J: Jane is vacant, long of Jacob’s strain? (6) K: Think back about good journalist made Sir (8) L: Part’s described - it’s covered o’er with fur? (4) M: Sweet little creature going round the bend (6) N: Tight door to nether shaft with tapered end (6) O: One’s deep - that’s due to rifle on the blink (10) P: Half-quench long-lost Yank’s first sappy drink (6) Q: Nausea’s sham, with drug implant on head (10) R: ‘Lead: ignore the queue’ - thus Spooner said (3,3,4) S: Those girls’ characters when playing Monopoly (4,6) T: Makes minor change to task we performed sloppily (6) U: Bad captain tuned out, topless, with no link (8) V: Vicar shortly backtracks, opening drink (8) W: Sinking’s dull (as kids say on the street) (4,6) X: See sexy dance outside, in wood - it’s sweet (6) Y: Within its cycle, ptarmigan so called (6) Z: Sponges noisy group; contestant bawled (8)